Established in 1986 Trekitt is family owned and run. We have always been driven by our passion for wild places and mountains and have enjoyed sharing those experiences with our customers for over 30 years.

Trekitt provides top quality equipment and clothing for mountaineers, hill walkers, climbers and travellers and has grown over the years to cater for a wide range of outdoor activities. We hold large stocks of specialist clothing and equipment from the worlds best brands backed up by our award winning customer service.  We are more than a shop, we are a service for adventure, we fully understand that to get the most from your passion you need the best kit that is fit for purpose and suits you personally.  We offer expert boot and rucksack fitting services in our Hereford shop and are always happy to discuss your equipment needs, so just call us.

The Hereford shop is open Monday to Saturday from 09:00 - 17:30.

We are closed on Sundays and Bank Holidays because we value our free time and want to keep it that way.

51 Eign GateHereford Herefordshire HR4 0AB
Mountain Equipment

Mountain Equipment Womens Sigma Jacket Cardinal Orange

Mountain Equipment Womens Sigma Jacket Cardinal Orange

£128.00 £320.00
60% off

Customer Rewards points earned with this item.

Other colours available:
Mountain Equipment Womens Sigma Jacket Cardinal Orange

Setting the milestone for modern alpinism, the Sigma from Mountain Equipment is obsessive in it's construction and one of the only choices for fast and light mountaineering goals. 

Description

Season : Sale

Code : 001852-01252-

Weight : 0KG

Hover over an icon to view more ...

The Mountain Equipment Sigma Jacket is pretty much the perfect lightweight down jacket for fast and light mountaineering adventures. Made with an uncompromising design to ensure maximum insulation, minimal weight and an outstanding pack-size, it excels in the world of modern alpinism and big mountain expeditions. 

As well as providing maximum insulation, the Sigma is windproof and highly water resistant, so you can use it as a standalone jacket in our typically cold and wet UK conditions, or layer it underneath a shell jacket in more extreme environments. It also works superbly as a belay jacket to chuck over the top of all your layers to provide warmth on those exposed belays, or when stopping for lunch on winter outings. How you wear it will depend on what you’re doing, how much effort you’re putting in and of course what the weather conditions are.

What is the Sigma Down Jacket made from?

The outer of the Sigma Down Jacket is constructed with Mountain Equipment’s own Drilite Loft fabric. Drilite Loft is an extremely tough, breathable and water-resistant Nylon fabric with a microporous Polyurethane coating that provides a hydrostatic head of 1500mm to keep the insulation dry in hostile environments.  It has also been treated with a Durable Water Repellent (DWR) to help water bead up and run off, but even though the fabric is incredibly weather resistant and windproof, it is not 100% waterproof, so always carry a shell jacket, because it will rain!

Mountain Equipment have also used the Drilite Loft fabric to line the inner hem, hood lining and pocket openings, as these are areas that are particularly prone to getting wet. The rest of the inner jacket is lined with an un-coated nylon to maximise breathability and softness next to the skin.

The stuff that’s keeping you warm inside this lovely jacket is M.E’s very best Eastern European goose down with an 800-fill power. What’s fill power? Well, for those who don’t know, it’s an internationally recognised measurement of how well down will “loft”. Loft describes how “fluffy” the insulation is, the “fluffier” down is the more space it can occupy and the more warm air it can trap in all those fine filaments. Down simply doesn’t work when compressed. The number used in Fill Power describes the amount of space one ounce of down will occupy in cubic inches when allowed to reach its maximum loft. So, in the case of the Mountain Equipment Sigma Jacket, one ounce of down will loft up to fill 800 cubic inches, or to put that in perspective, it’s equivalent to about 13 litres, or the same as a Large Exped Fold Dry-Bag.

What makes Mountain Equipment's down so special is their Down Codex programme. Most companies are now taking steps to make sure their down is coming from ethical sources, but Mountain Equipment are taking the whole process to another level. The waterfowl (geese and ducks) are all by-products of the food and meat industry, every supplier wishing to work with Mountain Equipment must accept the terms of their Down Codex and allow a full audit of all parts of the supply chain - that means everything from farm to factory. On top of all of that, you can even trace your down on their website right back to the source using a unique 12-digit code printed on the label inside every Mountain Equipment down product. In fact, Mountain Equipment are so proud of how ethical their down is, they’ve sewn a label to the inside telling you all about it, and there’s even a leaflet in the pocket with the full story.

All that lovely, ethical down is kept in place in stitch-through baffles to keep it close to your body to maximise performance. In fact, each and every baffle has been optimised for down distribution and fill weight to maximise performance.

The use, throughout the Sigma, of technical, lightweight fabrics and high quality down keep the overall weight (size Medium) to around 570g.

What are the main features?

The hood on the Sigma is a key feature for us at Trekitt, especially me, I love a good hood! M.E have used their Half Dome HC hood design, which basically means that it’ll work well over a helmet and also over your bare head. The trick to this exceptional fit is M.E’s EXL lining, borrowed from their sleeping bag construction, EXL linings have elasticated stitching that allows the hood to sit close to your head, or stretch to fit over a hat or helmet. The massive benefit is that the insulation is always kept close to your head to maximise warmth and comfort. You also get a stiffened peak to stop it flopping down over your eyes and side draw cords with captivated ends to stop them whipping you in the face when it gets windy. The hood also gets a full Drilite fabric lining to stop sweat and moisture from penetrating the down insulation.

The main zip is a reliable two-way YKK moulded version to reduce ice build-up and it is backed up by an offset insulated internal baffle to keep out the drafts.

Storage wise, you get two YKK moulded zipped hand pockets with a panel of Drilite Loft fabric at the entrance to help stop water wicking its way into the pockets. There’s also a zipped internal mesh pocket to keep valuables safe and warm.

The sleeves are finished off with a part elasticated and part Velcro adjusters to tightly seal out the cold over bare wrists or bulky gloves. At the hem you get dual tether hem drawcords, these allow you to tailor the fit and they avoid snagging on ice axes or poles as there’s no loop. The hem also gets a Drilite fabric lining to stop water run-off from wicking up the lining and penetrating the down insulation.

How does the Sigma Down Jacket Fit?

As a technical insulating jacket, it’s designed to fit closely to maximise the insulation. The last thing you want is a big baggy jacket as you’ll waste energy warming up all that dead air space, and conversely you don’t want it too tight either as that’ll hinder the downs ability to fully loft. 

The first thing you notice when you put the Sigma on is that it has a close fit around the hips and trunk, with plenty of room in the chest and shoulders to allow full freedom of movement and reach. I’m 5’1”, weigh around 50kg and I’m wearing a size women’s XS, and it fits perfectly.  However, if you were looking to buy this as an everyday “coat” you might struggle to get it over bulkier clothing and it’d worth considering a more regular fitting alternative, such as the M.E Lightline, or Arcteryx Thorium AR

Where does the Sigma Down Jacket fit in the layering system?

The Sigma Down Jacket works best as an extremely light-weight, breathable outer jacket when you’re out in the mountains in typical UK damp and freezing conditions. Because it is highly packable it can be carried in your pack for use as an insulating over-layer on belays or food stops, or, in extreme conditions it works under a shell jacket as an efficient and very warm insulating layer. Basically, it's super versatile!

Layering is not a precise science and there is no one perfect system that will suit every person, situation or the weather conditions. Some of us feel the cold, others, like me, get hot very quickly, but for more advice on using layers please check our YouTube video

Summary

So that’s it, the Mountain Equipment Sigma Jacket, an incredibly lightweight, comfortable, technical and versatile performer for all mountain adventures; it fits superbly and is beautifully made thanks to Mountain Equipment’s 50-year experience in making gear for the most inhospitable places on the planet.

  • Lightweight
  • Packable
  • Drilite loft 30D outer
  • Windproof and highly water resistant
  • 210g (Size 12) of Goose Down with a MINIMUM content of 90/10 800 fill power
  • Stitched-through baffle construction throughout
  • Optimised down distribution and fill weights using a baffle-by-baffle approach
  • Half Dome HC hood with EXL lining
  • 2-way YKK moulded centre front zip with an offset insulated rear baffle
  • 2 zipped hand warmer pockets with moulded zips
  • Drilite Loft 30D hem, pocket and hood lining
  • Adjustable cuffs and dual tether hemcord
Technical Information

Weight: 570g / 20.1oz

Down: 201g (Size 12) of Goose Down with a MINIMUM content of 90/10 800 fill power

Fabric: 30D / 30D - 53g / 1.9oz.

Content: 100% Polymide outer/inner

Sizing Information

Click here for the manufactures size charts.

Reviews
0
0
Write a review

Review This Item

0
As rated by 0 Customers

What do you think of Mountain Equipment Womens Sigma Jacket Cardinal Orange?

  • Your Forename
  • Your Email
  • How would you rate it?
  • Would You Recomend this product?
  • Yes: No:
  • Let others know your opinion.
  • Submit Review
Coming Soon

This product will be available very soon. Want to be the first to know when it arrives? Simply enter your email address below and we will notify you as soon as the stock is on the system

trig
 

Thanks for choosing this item ...

Mountain Equipment Womens Sigma Jacket Cardinal Orange

Would you like to see the special offer we have for you?

 

   

The product I bought was competitively priced. The video demonstration of the product assisted me in my decision to purchase the item and was very informative, as it showed all of the features and the fit. I chose "click and collect" which was an efficient and quick process. I would definitely shop here again.

Amanda  •   19 Jan 2019.

Read More Reviews

Need some help?
To improve your shopping experience today and in the future, this site uses cookies.
I Understand