NEW: Sigma Waterproof Jacket

Our lowest impact waterproof yet.

Sigma gives you year-round protection from the elements combined with maximum product circularity – it’s fully recyclable at the end of its life. A lightweight and breathable 3-layer jacket for all day comfort. A versatile hardshell, use it as part of a layering system to tick off Wainwrights in autumn or stash it in your pack to fend off summer showers in the hills.

At a glance

- 3-layer construction for ultimate wet weather performance
- Next-to-skin comfort thanks to a soft-touch polyester knit backing fabric
- 10K MVTR fabric and mesh lined pockets to keep cool on the move
- Fully recycled and recyclable at end of life, finished with a PFC-free DWR

Vital stats

Performance

Hydrostatic head: 15,000mm
MVTR: 10,000g/sqm/24hr

Construction

Outer Fabric: 140gsm 50D, 100% recycled polyester ripstop
Inner fabric: 100% polyester knit backer
Membrane: 100% polyester
DWR: Free from PFCs

Weight

400g (size M)

Fit

Regular

Origin

China

Product overview

- 3-layer fully-recycled polyester fabric
- Single polymer construction is easily recycled at end-of-life
- YKK AquaGuard® zips for improved protection
- Low profile semi-elasticated cuffs work well with gloves
- Breathable fabric for comfort when working hard
- Map-size pockets with mesh lining for easy venting
- Soft, quiet fabric with mild stretch for comfort while moving
- Adjustable hood with wired peak, rear drawcord and elasticated opening
- 3-year Alpine Bond Guarantee

Care and repair

Washing instructions

Wash: 30˚C, delicate cycle at or hand wash with lukewarm water.
Dry: Line dry or tumble dry on low heat.
Iron: Use a cool iron to reactivate the DWR.

Use a technical wash product (like Nikwax Tech Wash or Grangers Performance Wash) or pure soap. DO NOT use detergent, fabric conditioners or softeners. Rinse thoroughly in clean water.

Caring for your DWR

To keep your jacket’s DWR treatment in good condition, wash it regularly in pure soap or a specialist cleaner. You may also need to refresh the treatment once or twice a year dependent on usage. To maintain the DWR, first wash and then treat using spray-on or wash-in re-proofer. Heat treat with iron, tumble drier, radiator or sunshine to finish.

Repairs

We have dedicated Repair Stations in our stores and we're fully equipped to breathe new life into your old kit. This includes spare parts, patches, new zips and wash and reproofing of your down and waterproofs. Pop into any store or contact us online for more info.

Details matter

3-layer construction maximises breathability and durability with a quiet face fabric and soft touch backer for next-to-skin comfort.

An elasticated hood with wired peak and rear drawcord, semi-elasticated cuffs, adjustable hem and YKK AquaGuard® zips keep you protected in strong wind and rain. Plus, two map-size pockets with mesh lining for easy venting.

Low impact. High performance.

3-layer waterproof, made with recycled and recyclable fabric

A jacket for all seasons

Lightweight, breathable and waterproof for days in the hills all year round

100% free from PFCs

We're one of the first outdoor brands to eliminate PFCs from our range.

Designer's notes

"We designed Sigma with circularity in mind. When it eventually comes to the end of its useful life (hopefully in many, many years’ time) most of the jacket can be recycled, rather than end up in landfill. By choosing a mono-monomer fabric construction, even down to the pocket bag mesh, we’ve made it as easy as possible to close the loop.

But we’ve not scrimped on performance to achieve this. Sigma has a 3-layer construction that’s fully waterproof and highly breathable for use in all seasons and all weathers. It’s also got all the features you need for a day on the hill like a map pocket, adjustable, wired-peak hood, semi-elasticated cuffs and soft touch fabric for next-to-skin comfort. Sigma will shrug off showers and storms alike."

Ronnie, Clothing Design Manager

Environmentally preferable materials

Recycled materials

Sigma uses a 100% recycled polyester fabric using a single polymer meaning it can be easily recycled at end-of-life.

PFC-free DWR

Sigma has a durable water repellent DWR that's completely free from PFCs. PFCs are potentially harmful and have been found to build up in the environment. We don't like the sound of that and are one of the first outdoor brands in the world to eliminate them from our range.

3-year Alpine Bond guarantee

If one of our products doesn't meet your expectations upon delivery, or if during its lifetime it doesn't live up to the demands placed on it, please return it to us for repair, replacement or refund. Find out more about ourAlpine Bond.

Responsible supply chain

Our products are made in the best factories in the world. We know the factories personally and they have all signed up to our Code of Ethics in our supply chain. This includes the Ethical Trading Initiative base code, fair pay, safe working environments, no child labour, no modern slavery, no bribery or corruption, no materials from conflict zones and humane farming methods.

All our factories sign up to our Code of Conduct. Find out where we make our product by visiting our Factories of Alpkit factory zone.

Carbon footprint and end of life

Reducing our carbon footprint

We are carbon neutral under PAS2060 and offset our Scope 1, Scope 2 and Scope 3 operations and transport emissions. We recognise that offsetting is not part of the solution but a point to pass through on a journey to Net Zero. Carbon Neutral is just a step in that journey.

We have joined the Science Based Targets Initiativewhich sets independent targets for us to achieve to do our bit to limit global warming to 1.5°C. Our targets are to halve our Scope 1 and Scope 2 emissions by 2025 based on 2018 base year and reduce our total carbon intensity by 15% every year to achieve genuine net zero by 2050.

End of life

When your partnership with this product is over send it back to us and we will pass it on to someone that needs it through our Continuum Project.

Shop Men's

Men's waterproof jacket size guide

Size chart (inches)
UK	XS	S	M	L	XL	XXL
Chest	34	37	40	43	46	49
Waist	28	30	32	34	36	38
Sleeve	32	33	34	35	36	36
EU	44	46	48	50	52	54
US	34	36	38	40	42	44

Size chart (cm)
UK	XS	S	M	L	XL	XXL
Chest	86	94	102	109	117	124
Waist	71	76	81	86	91	97
Sleeve	82	84	86	88	90	92
EU	44	46	48	50	52	54
US	34	36	38	40	42	44

How to measure

This size chart indicates the body measurements our garments are designed to fit. Measure yourself as described below and use the size chart to find your size.

Chest

Measure around your chest at the widest part. The tape measure should pass under your arms and be level from front to back.

Waist

Measure around your waist at the narrowest point.

Sleeve

With your arms relaxed by your side, tilt your head down and ask a friend to measure from the bone at the base of your neck, over your shoulder and down your arm to the fold at your wrist.

Fit Guide

Tight

Close fitting designed to conform to your body.

Slim

Slim and slightly contoured but not form fitting.

Regular

A comfortable fit that's not too tight, nor too loose.

Relaxed

A looser fit with a bit more space but not too baggy.

Shop Women's

Women's waterproof jacket size guide

Size chart (inches)
UK	6	8	10	12	14	16	18	20
Chest	30	32	34	36	38	40	42	45
Waist	23	25	27	29	31	33	35	38
Hips	33	35	37	39	41	43	45	48
Sleeve	27.5	28.25	29.25	30	30.75	31.5	32.25	33.5
EU	42	44	46	48	50	52	54	56
US	32	34	36	38	40	42	44	46

Size chart (cm)
UK	6	8	10	12	14	16	18	20
Chest	76	81	86	91	97	102	107	114
Waist	59	64	69	74	79	84	89	96
Hips	84	89	94	99	104	109	114	122
Sleeve	70	72	74	76	78	80	82	85
EU	42	44	46	48	50	52	54	56
US	32	34	36	38	40	42	44	46