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Forst KL3 GTX Chainsaw Boots
SKU: Crispi | CY-WF3925-6600-39
サイズガイド
Key Features
- EN ISO 17249 Class 2 certified chainsaw protection
- Lightweight at approx. 930g per boot
- Vibram® Megagrip® soles for traction on wet, uneven ground
- Gore-Tex® lining for waterproof, breathable comfort
- Regular price
- £300.00
- RRP: £280.00
- Sale price
- £300.00 £300.00
- Regular price
-
- Was £300.00
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製品情報と仕様
Crispi Forst KL3 GTX Chainsaw Boots - Class 3 EN ISO 17249 - Gore-Tex Insulated
The Crispi Forst KL3 GTX is a Class 3 chainsaw protective boot certified to EN ISO 17249:2013 KL3 — the highest chainsaw protection class available for footwear, covering chain speeds up to 24 m/s. Weighing just 1,180g, the KL3 directly challenges the traditional trade-off in Class 3 chainsaw boots: the choice between maximum leg protection and practical daily wearing weight. A fully waterproof and insulated Gore-Tex Insulated Comfort membrane keeps feet dry and warm in cold and wet forestry conditions, while the Vibram Full Control sole with EFX midsole and semi-rigid dual-density PU construction delivers secure grip and precision underfoot on uneven terrain. The all-round rubber protective rand, aluminium toe cap and puncture-resistant insole complete a protection profile designed for arborists and forestry professionals working in the most demanding environments. Available in anthracite in EU sizes 39 to 47 (approximately UK 6 to UK 12). In stock at Gustharts with free UK delivery available.
Crispi is an Italian footwear manufacturer founded in 1975, producing premium hunting, tactical and outdoor performance boots. The Forst KL3 GTX is Crispi's first Class 3 chainsaw boot — applying their expertise in lightweight performance footwear engineering to the requirements of full KL3 protective certification, and distributed in the UK through Outwear.
Key Features
- EN ISO 17249:2013 KL3 certification — Class 3 chainsaw protection; covers chain speeds up to 24 m/s; the highest available protection class for chainsaw footwear
- All-round rubber protective rand — circumferential rubber toe and lower-foot protection absent from most Class 2 chainsaw boots
- Aluminium toe cap — impact and compression protection; lighter than steel at equivalent protection rating
- Puncture-resistant insole — differentiated anti-perforation structure protects against ground-level penetration hazards
- 1,180g — lightweight for a full Class 3 certified chainsaw boot; significantly lighter than traditional heavy Class 3 alternatives
- Gore-Tex Insulated Comfort Footwear — 100% waterproof membrane with insulation for warmth in cold and wet working conditions
- Vibram Full Control sole with EFX midsole — designed for maximum grip and traction on varied terrain; precision underfoot feel
- Semi-rigid PU midsole with dual density — combines underfoot protection with the support and responsiveness needed for precision work on the spikes
- Thermo-Wire — Crispi's structural support system built into the upper for enhanced stability, structure and ankle protection without added bulk
- Instant-Fit system — combines Board Lasting, Ankle Bone Support System and Anatomic Fit for day-one comfort without a break-in period
- Water repellent crust leather upper — durable outer layer with inherent water resistance
- Removable CRISPI Antistatic footbed — supports hygiene and custom insole use
- Available EU 39–47 — approximately UK 6 to UK 12
Technical Specification
| Brand | Crispi (Italian manufacturer, founded 1975) |
|---|---|
| Model | Forst KL3 GTX |
| Chainsaw Protection Standard | EN ISO 17249:2013 KL3 (also referenced under superseded standard EN 381-3) |
| Protection Class | Class 3 — chain speeds up to 24 m/s |
| Weight | 1,180g |
| Colour | Anthracite |
| Size Range | EU 39–47 (approximately UK 6–12) |
| Upper | Water repellent crust leather |
| Lining | Gore-Tex Insulated Comfort Footwear — waterproof and thermally insulated |
| Toe Cap | Protective aluminium |
| Rand | All-round rubber protective rand |
| Insole | Differentiated structure anti-perforation |
| Removable Footbed | CRISPI Antistatic |
| Sole | Vibram Full Control with EFX midsole |
| Midsole | Semi-rigid PU, dual density |
| Technologies | Thermo-Wire structural support; Instant-Fit (Board Lasting + Ankle Bone Support + Anatomic Fit) |
Understanding EN ISO 17249 and the KL Classes
EN ISO 17249 is the current European and international standard for chainsaw protective footwear. It supersedes the earlier standard EN 381-3 — you may see older boot listings referenced under EN 381-3, but the testing methodology and performance requirements are equivalent. The standard defines three protection classes based on the chain speed the boot must withstand in testing:
- Class 1 (KL1) — protection against chain speeds up to 16 m/s
- Class 2 (KL2) — protection against chain speeds up to 20 m/s
- Class 3 (KL3) — protection against chain speeds up to 24 m/s — the highest available class
The Forst KL3 GTX is certified to KL3 — the maximum level of chainsaw boot protection. In addition to the KL3 chainsaw rating, the certification code includes: CI (cold insulated — the Gore-Tex Insulated membrane); E (energy absorption of heel); WR (water resistant to the sole); WRU (water resistant upper).
Class 3 certification is required by some employers and organisations for chainsaw operators in high-risk environments, and may be specified in some contracts. For arborists operating chainsaws at height, Class 3 provides all-round protection against the full range of contact angles that aerial work creates.
KL3 vs KL2 - Forst KL3 GTX vs Forst GTX
Both are Crispi Forst chainsaw boots using Gore-Tex waterproofing and premium Vibram soles. The key differences determine which is right for your risk level and working environment.
| Feature | Crispi Forst GTX (KL2) | Crispi Forst KL3 GTX (this product) |
|---|---|---|
| Protection class | Class 2 — up to 20 m/s | Class 3 — up to 24 m/s (highest available) |
| Certification | EN ISO 17249:2013 KL2 | EN ISO 17249:2013 KL3 |
| Weight | 930g | 1,180g |
| Rubber rand | No | Yes — all-round rubber protective rand |
| Gore-Tex type | Performance Comfort (non-insulated) | Insulated Comfort (warm and waterproof) |
| Sole | Vibram MEGAGRIP | Vibram Full Control with EFX midsole |
| Midsole | PU shock absorbing | Semi-rigid dual-density PU |
| Best for | Three-season forestry and arboricultural use; employers specifying KL2 minimum | Maximum protection environments; aerial work; winter/cold-weather use; KL3 contract requirements |
Choose the KL3 if your employer or risk assessment specifies Class 3 protection, if you work with high-speed professional chainsaws, if you regularly work aerially where contact angle varies, or if you need insulated waterproofing for cold-weather working. Choose the KL2 if Class 2 satisfies your risk assessment and you prioritise the lightest possible boot. See the Crispi Forst GTX (KL2) here.
Also Known As
The Crispi Forst KL3 GTX is also referred to as Class 3 chainsaw boots, KL3 chainsaw boots, chainsaw protective footwear, forestry safety boots and chainsaw safety boots. In some contexts it may be referenced under the older EN 381-3 chainsaw boot standard — the EN ISO 17249:2013 standard this boot is certified to is the current equivalent. For ordering, reference the Crispi Forst KL3 GTX and select your EU size from the range available.
Complete Your Kit
- Chainsaw protective trousers — EN ISO 11393-2 certified leg protection required alongside certified chainsaw boots for full lower-body chainsaw PPE compliance
- Chainsaw helmet systems — certified face, visor and hearing protection for the full chainsaw PPE ensemble
- Climbing harnesses — required PPE for aerial chainsaw work where the KL3's all-round protection is most relevant
Explore More
FAQs
What is the difference between Class 2 and Class 3 chainsaw boots?
Class 2 (KL2) boots are certified to protect against chain speeds up to 20 m/s. Class 3 (KL3) boots protect against chain speeds up to 24 m/s and typically also include additional protective features such as an all-round rand. Class 3 is the highest chainsaw boot protection class available under EN ISO 17249.
Do I need Class 3 chainsaw boots?
This depends on your employer's risk assessment, contract specifications and the type of chainsaw work you carry out. Class 3 is required by some employers and organisations, particularly for high-speed professional chainsaw use and aerial work. Consult your employer's PPE requirements and your risk assessment before selecting a protection class.
Is EN ISO 17249 the same as EN 381-3?
EN ISO 17249 is the current standard for chainsaw protective footwear. It supersedes EN 381-3. The protection classes and testing methodology are equivalent — a KL3 boot certified under EN ISO 17249 provides the same level of protection as a Class 3 boot certified under the older EN 381-3.
Are these boots warm enough for winter forestry work?
Yes. The Gore-Tex Insulated Comfort Footwear lining provides both waterproofing and thermal insulation for cold-weather use — this is the insulated variant of Gore-Tex, unlike the non-insulated Performance Comfort lining in the Forst GTX KL2.
What UK shoe sizes do EU 39–47 correspond to?
Approximately: EU 39 ≈ UK 6, EU 40 ≈ UK 6.5, EU 41 ≈ UK 7.5, EU 42 ≈ UK 8, EU 43 ≈ UK 9, EU 44 ≈ UK 9.5–10, EU 45 ≈ UK 10.5–11, EU 46 ≈ UK 11–11.5, EU 47 ≈ UK 12. If you are between sizes, Crispi recommend sizing up due to the precision Instant-Fit construction.
What is the Instant-Fit system?
Instant-Fit is Crispi's proprietary fit system combining Board Lasting (a rigid insole board for structural foot support), Ankle Bone Support System (targeted padding around the ankle bones) and Anatomic Fit System (a last shaped to the natural foot form). Together they provide day-one comfort without the traditional break-in period.
What is Thermo-Wire?
Thermo-Wire is a Crispi structural support element built into the upper of the boot. It provides additional rigidity, stability and ankle support without adding significant weight — a key part of how the KL3 achieves its Class 3 rating at 1,180g.
Product specifications
Crispi Forst KL3 GTX Chainsaw Boots - Class 3 EN ISO 17249 - Gore-Tex Insulated
The Crispi Forst KL3 GTX is a Class 3 chainsaw protective boot certified to EN ISO 17249:2013 KL3 — the highest chainsaw protection class available for footwear, covering chain speeds up to 24 m/s. Weighing just 1,180g, the KL3 directly challenges the traditional trade-off in Class 3 chainsaw boots: the choice between maximum leg protection and practical daily wearing weight. A fully waterproof and insulated Gore-Tex Insulated Comfort membrane keeps feet dry and warm in cold and wet forestry conditions, while the Vibram Full Control sole with EFX midsole and semi-rigid dual-density PU construction delivers secure grip and precision underfoot on uneven terrain. The all-round rubber protective rand, aluminium toe cap and puncture-resistant insole complete a protection profile designed for arborists and forestry professionals working in the most demanding environments. Available in anthracite in EU sizes 39 to 47 (approximately UK 6 to UK 12). In stock at Gustharts with free UK delivery available.
Crispi is an Italian footwear manufacturer founded in 1975, producing premium hunting, tactical and outdoor performance boots. The Forst KL3 GTX is Crispi's first Class 3 chainsaw boot — applying their expertise in lightweight performance footwear engineering to the requirements of full KL3 protective certification, and distributed in the UK through Outwear.
Key Features
- EN ISO 17249:2013 KL3 certification — Class 3 chainsaw protection; covers chain speeds up to 24 m/s; the highest available protection class for chainsaw footwear
- All-round rubber protective rand — circumferential rubber toe and lower-foot protection absent from most Class 2 chainsaw boots
- Aluminium toe cap — impact and compression protection; lighter than steel at equivalent protection rating
- Puncture-resistant insole — differentiated anti-perforation structure protects against ground-level penetration hazards
- 1,180g — lightweight for a full Class 3 certified chainsaw boot; significantly lighter than traditional heavy Class 3 alternatives
- Gore-Tex Insulated Comfort Footwear — 100% waterproof membrane with insulation for warmth in cold and wet working conditions
- Vibram Full Control sole with EFX midsole — designed for maximum grip and traction on varied terrain; precision underfoot feel
- Semi-rigid PU midsole with dual density — combines underfoot protection with the support and responsiveness needed for precision work on the spikes
- Thermo-Wire — Crispi's structural support system built into the upper for enhanced stability, structure and ankle protection without added bulk
- Instant-Fit system — combines Board Lasting, Ankle Bone Support System and Anatomic Fit for day-one comfort without a break-in period
- Water repellent crust leather upper — durable outer layer with inherent water resistance
- Removable CRISPI Antistatic footbed — supports hygiene and custom insole use
- Available EU 39–47 — approximately UK 6 to UK 12
Technical Specification
| Brand | Crispi (Italian manufacturer, founded 1975) |
|---|---|
| Model | Forst KL3 GTX |
| Chainsaw Protection Standard | EN ISO 17249:2013 KL3 (also referenced under superseded standard EN 381-3) |
| Protection Class | Class 3 — chain speeds up to 24 m/s |
| Weight | 1,180g |
| Colour | Anthracite |
| Size Range | EU 39–47 (approximately UK 6–12) |
| Upper | Water repellent crust leather |
| Lining | Gore-Tex Insulated Comfort Footwear — waterproof and thermally insulated |
| Toe Cap | Protective aluminium |
| Rand | All-round rubber protective rand |
| Insole | Differentiated structure anti-perforation |
| Removable Footbed | CRISPI Antistatic |
| Sole | Vibram Full Control with EFX midsole |
| Midsole | Semi-rigid PU, dual density |
| Technologies | Thermo-Wire structural support; Instant-Fit (Board Lasting + Ankle Bone Support + Anatomic Fit) |
Understanding EN ISO 17249 and the KL Classes
EN ISO 17249 is the current European and international standard for chainsaw protective footwear. It supersedes the earlier standard EN 381-3 — you may see older boot listings referenced under EN 381-3, but the testing methodology and performance requirements are equivalent. The standard defines three protection classes based on the chain speed the boot must withstand in testing:
- Class 1 (KL1) — protection against chain speeds up to 16 m/s
- Class 2 (KL2) — protection against chain speeds up to 20 m/s
- Class 3 (KL3) — protection against chain speeds up to 24 m/s — the highest available class
The Forst KL3 GTX is certified to KL3 — the maximum level of chainsaw boot protection. In addition to the KL3 chainsaw rating, the certification code includes: CI (cold insulated — the Gore-Tex Insulated membrane); E (energy absorption of heel); WR (water resistant to the sole); WRU (water resistant upper).
Class 3 certification is required by some employers and organisations for chainsaw operators in high-risk environments, and may be specified in some contracts. For arborists operating chainsaws at height, Class 3 provides all-round protection against the full range of contact angles that aerial work creates.
KL3 vs KL2 - Forst KL3 GTX vs Forst GTX
Both are Crispi Forst chainsaw boots using Gore-Tex waterproofing and premium Vibram soles. The key differences determine which is right for your risk level and working environment.
| Feature | Crispi Forst GTX (KL2) | Crispi Forst KL3 GTX (this product) |
|---|---|---|
| Protection class | Class 2 — up to 20 m/s | Class 3 — up to 24 m/s (highest available) |
| Certification | EN ISO 17249:2013 KL2 | EN ISO 17249:2013 KL3 |
| Weight | 930g | 1,180g |
| Rubber rand | No | Yes — all-round rubber protective rand |
| Gore-Tex type | Performance Comfort (non-insulated) | Insulated Comfort (warm and waterproof) |
| Sole | Vibram MEGAGRIP | Vibram Full Control with EFX midsole |
| Midsole | PU shock absorbing | Semi-rigid dual-density PU |
| Best for | Three-season forestry and arboricultural use; employers specifying KL2 minimum | Maximum protection environments; aerial work; winter/cold-weather use; KL3 contract requirements |
Choose the KL3 if your employer or risk assessment specifies Class 3 protection, if you work with high-speed professional chainsaws, if you regularly work aerially where contact angle varies, or if you need insulated waterproofing for cold-weather working. Choose the KL2 if Class 2 satisfies your risk assessment and you prioritise the lightest possible boot. See the Crispi Forst GTX (KL2) here.
Also Known As
The Crispi Forst KL3 GTX is also referred to as Class 3 chainsaw boots, KL3 chainsaw boots, chainsaw protective footwear, forestry safety boots and chainsaw safety boots. In some contexts it may be referenced under the older EN 381-3 chainsaw boot standard — the EN ISO 17249:2013 standard this boot is certified to is the current equivalent. For ordering, reference the Crispi Forst KL3 GTX and select your EU size from the range available.
Complete Your Kit
- Chainsaw protective trousers — EN ISO 11393-2 certified leg protection required alongside certified chainsaw boots for full lower-body chainsaw PPE compliance
- Chainsaw helmet systems — certified face, visor and hearing protection for the full chainsaw PPE ensemble
- Climbing harnesses — required PPE for aerial chainsaw work where the KL3's all-round protection is most relevant
Explore More
FAQs
What is the difference between Class 2 and Class 3 chainsaw boots?
Class 2 (KL2) boots are certified to protect against chain speeds up to 20 m/s. Class 3 (KL3) boots protect against chain speeds up to 24 m/s and typically also include additional protective features such as an all-round rand. Class 3 is the highest chainsaw boot protection class available under EN ISO 17249.
Do I need Class 3 chainsaw boots?
This depends on your employer's risk assessment, contract specifications and the type of chainsaw work you carry out. Class 3 is required by some employers and organisations, particularly for high-speed professional chainsaw use and aerial work. Consult your employer's PPE requirements and your risk assessment before selecting a protection class.
Is EN ISO 17249 the same as EN 381-3?
EN ISO 17249 is the current standard for chainsaw protective footwear. It supersedes EN 381-3. The protection classes and testing methodology are equivalent — a KL3 boot certified under EN ISO 17249 provides the same level of protection as a Class 3 boot certified under the older EN 381-3.
Are these boots warm enough for winter forestry work?
Yes. The Gore-Tex Insulated Comfort Footwear lining provides both waterproofing and thermal insulation for cold-weather use — this is the insulated variant of Gore-Tex, unlike the non-insulated Performance Comfort lining in the Forst GTX KL2.
What UK shoe sizes do EU 39–47 correspond to?
Approximately: EU 39 ≈ UK 6, EU 40 ≈ UK 6.5, EU 41 ≈ UK 7.5, EU 42 ≈ UK 8, EU 43 ≈ UK 9, EU 44 ≈ UK 9.5–10, EU 45 ≈ UK 10.5–11, EU 46 ≈ UK 11–11.5, EU 47 ≈ UK 12. If you are between sizes, Crispi recommend sizing up due to the precision Instant-Fit construction.
What is the Instant-Fit system?
Instant-Fit is Crispi's proprietary fit system combining Board Lasting (a rigid insole board for structural foot support), Ankle Bone Support System (targeted padding around the ankle bones) and Anatomic Fit System (a last shaped to the natural foot form). Together they provide day-one comfort without the traditional break-in period.
What is Thermo-Wire?
Thermo-Wire is a Crispi structural support element built into the upper of the boot. It provides additional rigidity, stability and ankle support without adding significant weight — a key part of how the KL3 achieves its Class 3 rating at 1,180g.
Product specifications
配送と返品
配送と返品
英国標準配送料 £3.60 から
お届け予定日数 2～4日
75ポンド+VAT以上のご注文で送料無料
お届け予定日数 2～4日
翌日配送 - £7.99
月曜日～金曜日の午後3時までに注文した場合、1日で配達予定
ヨーロッパへの国際配送は£10.00から
お届け予定日数 2～7日
国際配送 世界のその他の地域 - £12.00から
お届け予定日数 2～11日
返品
30日間返品ポリシー
配送オプションの詳細については、 こちらの配送ページをご覧ください。
International Delivery
We ship worldwide from the UK.
- Europe from £10.00 - Estimated delivery: 2–7 working days
- Rest of the World from £12.00 - Estimated delivery: 2–11 working days
Shipping costs and delivery times are calculated at checkout based on destination and order contents.
Customs, Duties & Taxes
International orders may be subject to local import duties, taxes, or customs charges.
When UPS is selected at checkout, applicable duties and taxes are included in the total price. For other shipping services, duties and taxes may be charged separately on delivery and are the responsibility of the recipient.
Customs processing times may affect delivery estimates.
Returns
30-Day Return Policy
- Items can be returned within 30 days of delivery
- Products must be unused and in original condition
- Return postage costs apply unless the item is faulty or incorrect
For full details, please visit our Shipping & Returns page.
配送と返品
英国標準配送料 £3.60 から
お届け予定日数 2～4日
75ポンド+VAT以上のご注文で送料無料
お届け予定日数 2～4日
翌日配送 - £7.99
月曜日～金曜日の午後3時までに注文した場合、1日で配達予定
ヨーロッパへの国際配送は£10.00から
お届け予定日数 2～7日
国際配送 世界のその他の地域 - £12.00から
お届け予定日数 2～11日
返品
30日間返品ポリシー
配送オプションの詳細については、 こちらの配送ページをご覧ください。
International Delivery
We ship worldwide from the UK.
- Europe from £10.00 - Estimated delivery: 2–7 working days
- Rest of the World from £12.00 - Estimated delivery: 2–11 working days
Shipping costs and delivery times are calculated at checkout based on destination and order contents.
Customs, Duties & Taxes
International orders may be subject to local import duties, taxes, or customs charges.
When UPS is selected at checkout, applicable duties and taxes are included in the total price. For other shipping services, duties and taxes may be charged separately on delivery and are the responsibility of the recipient.
Customs processing times may affect delivery estimates.
Returns
30-Day Return Policy
- Items can be returned within 30 days of delivery
- Products must be unused and in original condition
- Return postage costs apply unless the item is faulty or incorrect
For full details, please visit our Shipping & Returns page.
