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POPULAR!

Kaiwaka Men's Stormforce Overtrousers

£155.00
Free UK Delivery

The next generation of Stormforce is here, rebranded for 2025 — refreshed look, upgraded features, with the same trusted Stormforce protection.

The next generation of Stormforce is here, rebranded for 2025 — refreshed look, upgraded features, with the same trusted Stormforce protection.

The next generation of Stormforce is here, rebranded for 2025 — refreshed look, upgraded features, with the same trusted Stormforce protection.

The next generation of Stormforce is here, rebranded for 2025 — refreshed look, upgraded features, with the same trusted Stormforce protection.

The next generation of Stormforce is here, rebranded for 2025 — refreshed look, upgraded features, with the same trusted Stormforce protection.

The next generation of Stormforce is here, rebranded for 2025 — refreshed look, upgraded features, with the same trusted Stormforce protection.

The next generation of Stormforce is here, rebranded for 2025 — refreshed look, upgraded features, with the same trusted Stormforce protection.

The trusted Stormforce classic design you know and love. Kaiwaka's original branding but the same legendary performance, at a special clearance price.

The trusted Stormforce classic design you know and love. Kaiwaka's original branding but the same legendary performance, at a special clearance price.

The trusted Stormforce classic design you know and love. Kaiwaka's original branding but the same legendary performance, at a special clearance price.

The trusted Stormforce classic design you know and love. Kaiwaka's original branding but the same legendary performance, at a special clearance price.

The trusted Stormforce classic design you know and love. Kaiwaka's original branding but the same legendary performance, at a special clearance price.

The trusted Stormforce classic design you know and love. Kaiwaka's original branding but the same legendary performance, at a special clearance price.

The trusted Stormforce classic design you know and love. Kaiwaka's original branding but the same legendary performance, at a special clearance price.

Design
What's the difference?
Size
KAIWAKA LIFETIME WARRANTY

Kaiwaka Clothing are committed to providing our customers high-quality durable gear, and we stand behind the quality of our garments for the duration of their life. Their Lifetime Warranty Policy reflects their commitment to ensuring your satisfaction with every purchase.

If you believe your Kaiwaka garment has defects in materials or workmanship, Kaiwaka will repair or replace it free of charge, at their discretion.

Customers can also benefit from Kaiwaka's free repair service, keeping your Kaiwaka gear performing for the long haul.

Please contact us at customerservice@sugarloafclothing.co.uk for more information.

CHRISTMAS DELIVERY & EXTENDED RETURNS

Shopping for Christmas? Make sure you order in good time! Our last recommended order dates for Christmas 2026 are:

Republic of Ireland: Tuesday 15th December, by 3pm

Royal Mail Tracked 48: Saturday 19th December, by 3pm

Royal Mail Tracked 24: Monday 21st December, by 3pm

Special Delivery Guaranteed Next Day: Wednesday 23rd December, by 3pm

Please note that Tracked 24 and Tracked 48 are delivery aims rather than guaranteed services. While orders placed by these dates are highly likely to arrive in time for Christmas, delays can happen during the festive period.

Extended Christmas returns

A gift that doesn't fit or isn't quite right? No problem. We've extended our returns period for Christmas 2026:

Orders placed 10th November – 12th December 2026 can be returned up until 10th January 2027.

Orders placed from 13th December 2026 onwards are covered by our standard 28-day returns policy.

For full details on eligibility and how to arrange a return or exchange, visit our Returns & Exchanges page.

FREE UK DELIVERY

Where possible, we send out all parcels on the same day the order is placed with us, if placed with us before 3pm Monday to Friday (excluding national bank holidays). We try to keep our postage cost as low as possible, so our rates reflect what we pay to package and send the item. From placing your order, you can expect your item(s) to arrive in 2-5 working days or less. 

All UK orders are delivered via Royal Mail using a traceable service. The tracking link for an order can be found on the order dispatch confirmation email or using this link here - Track my item with Royal Mail.

Orders made on the weekend will be posted on Monday regardless of selected delivery option. This is due to Royal Mail not picking up from us on weekends.

If you are located outside of the UK, please click here for our international delivery information.

NEED HELP?

Talk to our friendly team on 07877 690753 or info@sugarloafclothing.co.uk.
Description

The Men’s Stormforce Overtrousers are the original twin-skin Kaiwaka waterproof trousers — tough, reliable, and the perfect partner to Kaiwaka’s Stormforce Parka or Winter Jacket. Part of the trusted Kaiwaka clothing range, these farming waterproof trousers shrug off wind, rain, and mud without cramping your style or movement.

Built with twin-skin technology and 500D rip-stop fabric, they offer double-layer waterproof, breathable protection. A DWR coating and high-frequency welded seams keep the inner liner 100% waterproof and breathable — no soggy mornings, no stuck boots, just dependable workwear ready for anything the farm throws at you.

The jean-style cut and tailored crutch insert give a close, comfortable fit with freedom to move, while the elasticated waistband, cut-away heel, and heavy-duty ankle domes keep wetness and dirt where they belong — out of your trousers. Two reinforced, weather-tight hip pockets carry essentials safely, making these mens farm wear the ultimate in practical agricultural workwear.

Rugged, hard-wearing, and built for long days on the land, the Stormforce Overtrousers are legendary for comfort, breathability, and toughness. Pair them with a Kaiwaka Coat, or the Stormforce Bib and Brace, and take on the weather without compromise.

KEY FEATURES & TECHNOLOGY

Comfort & Fit
• Easy-stretch elastic/webbed waistband with non-slip step-lock fastener for a secure, comfortable fit.
• Jean-style tailored crutch insert for freedom of movement and added reinforcement.
• Cut-away heel prevents the trouser leg from catching under boots.
• Heavy-duty ankle domes seal out wetness and dirt while keeping boots snug.

Practical Details
• Two weather-tight hip pockets, fully lined and corner-reinforced for durability.
• Designed for farming waterproof trousers with all-day usability on the land.

Weather Protection & Durability
• Twin-skin technology provides double-layer waterproof and breathable protection.
• Robust 500D rip-stop fabric with DWR coating actively repels water and dirt.
• High-frequency welded seams make the inner liner 100% waterproof, windproof, and breathable.
• Outer layer rated 15,000 mm waterproof / 5,000 g/m²/24hr breathable, bonded to a fully waterproof inner liner.
• Precision construction ensures long-lasting, hard-working mens farm wear.

WHY KAIWAKA STORMFORCE

The Kaiwaka Stormforce of wet weather gear is born of grassroots knowledge, hands-on experience and full-on respect for the land. Kaiwaka pioneered the development of twin-skin technology, and this high performance workwear is designed by farmers, for farmers. 100% guaranteed to keep you protected and keep you going, no matter how much wind, rain, mud or muck comes your way. Performance-wise, Stormforce is a force of nature: 100% windproof + 100% waterproof + unique twin-skin technology + breathable + durable.

CARE INSTRUCTIONS

• Hand or machine wash up to 40°C (max).
• Do not spin, drip dry only.
• Do not dry clean, tumble dry or iron.
• Do not use bleach or detergent.
• Do not store away damp.

WHY BUY THE NEW Kaiwaka Men's Stormforce Overtrousers?

New for 2025, the next generation of Stormforce is here. The same trusted waterproof performance, upgraded for strength, comfort, modern branding and all-weather protection.

KAIWAKA TWIN SKIN TECHNOLOGY

Dual-layer fabric system designed to create an impenetrable barrier against the elements. This advanced fabric structure combines a robust outer layer with a lightweight inner lining, delivering superior strength, flexibility, and comfort.
  • waterproof: 20,000mm+

    Twin Skin Technology creates a fully waterproof and windproof barrier that prevents rain and wind from penetrating.

  • BREATHABILITY: 15,000g/m²+

    The polyester lining and ventilated air gap manage moisture and regulate body heat, keeping you dry by wicking sweat away while letting excess heat escape.

  • DURABILITY: 500D RIPSTOP

    The outer mechanical stretch ripstop fabric is designed to handle tough environments, resisting tears and abrasions while providing flexibility.

Customers praised these overtrousers as "truly made to last" with excellent durability and breathability. Shoppers noted they're "incredibly water resistant" and comfortable for work environments involving livestock. The fabric is more durable than alternatives and fits well with room to move. One concern: press studs at leg bottoms come undone easily, filling with debris.

  • Easily as breathable if not better than gortex but a far more durable fabric
  • 100% worth the cost - incredibly water resistant
  • Truly made to last. Superb in challenging work environments.
Water resistance (positive)Durability (positive)Fit (positive)Quality (positive)Comfort (positive)
  • 5 stars: 6 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
C
C.M.
Fantastic quality

Kaiwaka clothing is truly made to last.
Delighted to find you had the size we needed in stock, which was dispatched quickly. Fits well & superb in challenging work environments. Highly recommend.

L
LizB
Excellent Over trousers

I purchased these over trousers for my husband for him to use in the market he works in , sorting sheep and cattle . He has been really impressed with the quality and how breathable they are

T
Toby
100% worth the cost

a lot more comfortable than those cheap flexothane trousers, don’t get too hot underneath either and they are incredibly water resistant

P
Paul
Brilliant

These are superb, I've worn many different over trousers from flexothane that is barely brethable to gortex that is OK until you kneel down or sit on a wet quad seat! And it rips easily.

The kaiwaka is easily as brethable if not better than gortex but a farr more durable fabric and washes off easily with a hose. Sitting on a wet quad bike seat absolutely no water soaks through!

Fit seems good, as a 31 waste 31 leg small fits perfectly. Not too baggy or too tight.

A
A Barton

Purchased as a Christmas present, as fed up with him grumbling about thin over trousers failing, these are recommended by local farming family....

M
Matthew Barker
So far so good

It’s not quite over trouser weather but have worn them a few times while on with cattle and sheep. They are very comfortable, fit well but have plenty of room to move, unlike other makes I’ve tried. They are warm and strong. The only thing I don’t like it the press stud at the bottom of the legs. Great when they are fastened but they come undone. If you don’t notice they fill with muck. You then have to clean them out and fasten them back up which isn’t very nice if your not near the pressure washer! Would be good to hear if you come up with a different idea to fasten the bottom. Thanks