Keiu Hi-Vis Rain Jacket
SKU: SIP Protection | SI-1SMR-570-S
Size Guide
Key Features
- EN 343 Class 4-4-X - highest waterproof and breathability rating
- Hi-vis orange with reflective shoulder piping
- Foldaway hood, underarm and back ventilation zips
- Two chest pockets, one internal pocket
- Regular price
- $221.00
- Sale price
- $221.00 $221.00 Ex VAT
- Regular price
-
Free Delivery Over £75 *
Worldwide Shipping from the UK
Trusted UK Arborist Retailer
30-Day Easy Returns
Product information & specifications
SIP Protection Keiu Hi-Vis Rain Jacket
Stay dry and visible in all weather conditions with the SIP Protection Keiu Hi-Vis Rain Jacket. This rugged and durable jacket is made with waterproof and breathable materials, so you can stay comfortable and protected even in the heaviest rain. The high-visibility orange colour ensures that you're seen by others, both day and night.
Key Features
- Fully waterproof and breathable – made from durable Siopor fabric certified to EN 343 Class 4-4-X, able to withstand heavy rain and wind while remaining breathable during hard work
- High visibility – bright orange with retro-reflective piping on the shoulders for visibility in low-light conditions
- Ergonomic fit – relaxed fit for full range of motion, with an extended back hem to keep rain out
- Foldaway hood that stores neatly in the collar
- Ventilation zippers under the arms and on the back
- Elasticated cuffs and hem
- Two chest pockets and one internal pocket
Certification Explained
EN 343 Class 4-4-X certifies the jacket for both water penetration resistance and water vapour resistance (breathability), with Class 4 being the highest rating on both scales — confirming genuinely heavy-duty rain and wind protection rather than a light shower jacket.
Why Choose the Keiu?
Class 4-4-X on both water resistance and breathability is the top rating under EN 343, so this jacket is built for sustained heavy rain rather than occasional showers — genuinely suited to a full day working outdoors in poor UK weather. The combination of underarm and back ventilation zips with that high breathability rating helps prevent the clammy build-up common in lower-spec waterproofs during physical work.
Also Known As
Also searched for as: SIP Keiu jacket, hi-vis waterproof jacket, EN 343 rain jacket, arborist rain jacket.
FAQs
How waterproof is this jacket?
It's certified to EN 343 Class 4-4-X, the highest rating for both water penetration resistance and breathability under the standard.
Does it have ventilation?
Yes, ventilation zippers under the arms and on the back help regulate temperature during physical work.
Is the hood detachable?
The hood is foldaway and stores neatly in the collar rather than detaching.
How many pockets does it have?
Two chest pockets and one internal pocket.
Is it suitable for tree surgery and climbing work?
Yes, the relaxed ergonomic fit allows full range of motion, making it suitable for tree surgery, climbing and other outdoor work.
SIP Protection Keiu Hi-Vis Rain Jacket
Stay dry and visible in all weather conditions with the SIP Protection Keiu Hi-Vis Rain Jacket. This rugged and durable jacket is made with waterproof and breathable materials, so you can stay comfortable and protected even in the heaviest rain. The high-visibility orange colour ensures that you're seen by others, both day and night.
Key Features
- Fully waterproof and breathable – made from durable Siopor fabric certified to EN 343 Class 4-4-X, able to withstand heavy rain and wind while remaining breathable during hard work
- High visibility – bright orange with retro-reflective piping on the shoulders for visibility in low-light conditions
- Ergonomic fit – relaxed fit for full range of motion, with an extended back hem to keep rain out
- Foldaway hood that stores neatly in the collar
- Ventilation zippers under the arms and on the back
- Elasticated cuffs and hem
- Two chest pockets and one internal pocket
Certification Explained
EN 343 Class 4-4-X certifies the jacket for both water penetration resistance and water vapour resistance (breathability), with Class 4 being the highest rating on both scales — confirming genuinely heavy-duty rain and wind protection rather than a light shower jacket.
Why Choose the Keiu?
Class 4-4-X on both water resistance and breathability is the top rating under EN 343, so this jacket is built for sustained heavy rain rather than occasional showers — genuinely suited to a full day working outdoors in poor UK weather. The combination of underarm and back ventilation zips with that high breathability rating helps prevent the clammy build-up common in lower-spec waterproofs during physical work.
Also Known As
Also searched for as: SIP Keiu jacket, hi-vis waterproof jacket, EN 343 rain jacket, arborist rain jacket.
FAQs
How waterproof is this jacket?
It's certified to EN 343 Class 4-4-X, the highest rating for both water penetration resistance and breathability under the standard.
Does it have ventilation?
Yes, ventilation zippers under the arms and on the back help regulate temperature during physical work.
Is the hood detachable?
The hood is foldaway and stores neatly in the collar rather than detaching.
How many pockets does it have?
Two chest pockets and one internal pocket.
Is it suitable for tree surgery and climbing work?
Yes, the relaxed ergonomic fit allows full range of motion, making it suitable for tree surgery, climbing and other outdoor work.
Delivery & Returns
UK Delivery
Fast, reliable delivery from our UK warehouse.
- FREE UK Standard Delivery
applies to eligible UK orders over £75 ex VAT.
Estimated delivery: 2–4 working days
- UK Standard Delivery from £3.60 + VAT
Estimated delivery: 2–4 working days
- Next Working Day Delivery – £6.00 + VAT
Order before 3:00pm (Monday–Friday) for next working day delivery
All UK orders are dispatched Monday–Friday and sent via a tracked courier service.
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.
UK Delivery
Fast, reliable delivery from our UK warehouse.
- FREE UK Standard Delivery
applies to eligible UK orders over £75 ex VAT.
Estimated delivery: 2–4 working days
- UK Standard Delivery from £3.60 + VAT
Estimated delivery: 2–4 working days
- Next Working Day Delivery – £6.00 + VAT
Order before 3:00pm (Monday–Friday) for next working day delivery
All UK orders are dispatched Monday–Friday and sent via a tracked courier service.
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.

