Alpkit / See what's NEW in women's clothing / Sigma [Womens]

Sigma

Name: Sigma [Womens] 3-layer waterproof jacket
Brand: Alpkit
Price: 169.99 GBP
Availability: InStock
Rating: 4.54 (13 reviews)

3-layer waterproof jacket

£169.99

All-day comfort and wet weather protection from a 3-layer membrane with best in class waterproof and breathability rating. 100% recycled and recyclable.

Size
- 6
- 8
- 10
- 12
- 14
- 16
- 18
- 20
Colour
- Blaze
- Spruce
- Outer Space
- Chipotle
- Fern
Check availability in store

Pre-order now for despatch from . We'll keep you up-to-date with your order progress and despatch as soon as it is available.

This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted.

Free Next Day Delivery*
Free Returns

Designed to keep you dry and protected when the weather has a tantrum and throws its worst at you: wind, rain, sleet and snow. For all-day comfort and long-lasting waterproof durability for all your outdoor activities.

3-layer construction for all-day comfort and wet weather protection
15,000 HH waterproof rating and 15,0000 MVTR breathability is best-in-class fabric performance
YKK aquaguard zips, adjustable hood, hem and cuffs with OS Map sized pockets complete the feature set
Fully recycled and recyclable at end of life, finished with a DWR free from PFC's

All-day comfort

Sigma's 3-layer breathable and waterproof membrane gives all-day comfort and wet weather protection. The adjustable hood with drawcord and rear toggle makes the practical hood easy to wear in wet and windy conditions. The jacket itself is rustle-free for "oh so quiet" moments with an almost imperceptible touch of stretch for ease of movement.

Its active cut, adjustable hem, velcro adjustable cuffs and YKK aquaguard zips make Sigma suitable for all your outdoor activities from hill-walking to scrambling and riding.

It's OS map-sized pockets complete the feature set of a classic outdoor waterproof.

Cutting edge technology

The Alpkit name means our waterproof jackets perform as you demand: waterproof and breathable. Not being signed to Goretex or the other component fabrics means we are free to innovate our fabrics with the worlds best mills. Our fabrics are cutting-edge in terms of performance and sustainability.

Sigma's fabric has been developed by us with performance and circularity in mind. It has 10,000 HH waterproof rating and 15,000 MVTR breathability rating makes it best in class for outdoor activity in the UK's temperate climates.

Check out how the breathability (15,000g/m²/day MVTR) and waterproof capability (10,000mm HH) of our fabrics compares with other brands and you will see just how good our fabrics are.

Impact

"A waterproof jacket hillwalking jacket that is eco-conscious too" The Ramblers Magazine

Sigma is designed with circularity in mind. It is made with a mono monomer construction. This means all components are made from the same material making the garment easier to recycle at the end of its life as it doesnt need to be broken down into separate recycling streams.

Sigma is made from 100% post consumer waste recycled polyester which itself is recyclable. Sigma's durable water repellent coating is entirely free from PFC's. Regularly wash and reproof your jacket at home to maintain its performance using Nikwax, Grangers or our own Alpkit Wash & Reproof care kits.

Do not be fearful that recycled implies a secondhand performance. Sigma has been tested for abrasion, durability, breathability and waterproofing.

Designer’s notes

"We designed Sigma with with wet weather performance, cross-over use and 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

Features

Product overview

3-layer fully-recycled polyester fabric
Single polymer contruction is easily recycled at end-of-life
YKK AquaGuard® zips
Low profile semi-elasticated cuffs
Breathable fabric for comfort when moving
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

Technical details

Vital stats

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

Construction

Fabric: 3-layer construction with PFC-free DWR

Face fabric: 140gsm 50D, 100% recycled polyester ripstop
Membrane:100% polyester
Backer: 100% polyester knit backer

Fit:

Regular

Weight:

400g (size medium)

Designer‘s notes

"We designed the Sigma with circularity in mind, so that when it eventually comes to the end of it’s useful life (hopefully in many, many year’s time) the majority of the jacket could be recycled, rather than end up in landfill. By choosing a mono-monomer (try saying that fast!) fabric construction, even down to the pocket bag mesh, we’ve made it as easy as possible to close the loop. Some elements like the zips and cord aren’t yet recyclable, which is where the challenge for future development lies. No one said it was easy…"

Designer‘s notes

Sustainability and Product Care

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. Use a spray-on reproofer to maintain your jacket's wicking ability.

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.

Alpine Bond
If one of our products does not meet your expectations upon delivery, or if during its lifetime does not live up to the demands placed upon it, please return it to us for repair, replacement or refund. If the problem is our fault then we will do this to your satisfaction. If it’s your fault then we will help out the best we can. Find out more about our Alpine Bond here.

How It Is Made

Recycled and recyclable material
100% recycled polyester fabric using single polymer meaning it can be easily recycled at end-of-life

PFC-free DWR
Sigma uses a PFC-free DWR treatment on its outer fabric. PFCs are potentially harmful and have been found to build up in the environment

Where It Is Made

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.

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 Initiative which 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 intesnity 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.

Works Well With

Teleki [Womens]

Lightweight and fast-drying trousers for warm weather hiking

£49.99

Kelpie [Womens]

Recycled micro-fleece layering top for trails

£49.99

*on standard orders to mainland UK. Bikes and oversize items are subject to normal shipping costs.

Next Day deliveries will be shipped same day if you place your order before 2pm Monday - Friday.

If you are not happy or have changed your mind, you can return your unused product within 123 days of placing the order for a refund.
Simply return it to us, free of charge, with all the original packaging.

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

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.

Hips

Standing with your feet together, measure around your hips at the widest part.

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 shape.

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.

Complete your purchase with

Email when available

Alpkit Apparel Care Kit

Wash and proof kit for your outdoor clothing

£9.99

Sorry, this is out of stock

Shop NEW for 2024

NEW for 2024

Winter camping joy

World Ready. Made In Britain

Ready to Ride deals

Alpkit Members' Outlet

Save again and again and again