Description
Product Ratings
Warmth
WarmExtremely Warm
Weight
UltralightHeavy
Packsize
SmallLarge
We find this suitable for
Hiking
Mountaineering
What is the Senja Jacket?
The Senja is an ultra-warm, weather-resistant yet lightweight and packable down jacket for trekking and mountaineering excursions. The high quality 700 fill power down and tough Drilite Loft outer keep you warm and protected in hostile environments.
What is it made of?
Insulation: The stuff that’s keeping you warm inside this lovely jacket is M.E’s high quality down rated at 700-fill power. What’s fill power? 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 Senja Jacket, one ounce of down will loft up to fill 700 cubic inches.
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.
Fabrics: The outer of the Senja 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!
What are the Senja’s features?
Starting at the top, the Senja features a fully adjustable, insulated hood with an insulated collar to keep your neck warm with the hood down. A two-way main zip means it’s easy to slip the jacket over a climbing harness or simply answer the call of nature. Two zipped handwarmer pockets and one inner security pocket store all the usual bits and bobs. Finally, a dual-tether hem drawcord seals in warmth around your waist and can’t get caught on an axe like a traditional looped drawcord.
How does it fit?
The Senja fits into Mountain Equipment’s ‘Alpine’ fit block, meaning there’s enough room underneath for additional layers, yet it sits closely to maximise warmth and performance.
Where does it fit in the layering system?
The Senja is designed primarily as an outer layer. The Drilite loft outer fabric will cope with light showers and is totally windproof, but if it does begin to rain heavily it’s not so bulky that you won’t be able to fit a shell over the top.
- Drilite Loft 40D outer fabric
- Windproof and water-resistant (not waterproof)
- 700 fill power down insulation
- Stitched-through construction
- Adjustable mountain hood
- Insulated collar
- Two-way main zip
- Two zipped hand pockets
- Zipped internal security pocket
- Adjustable cuffs
- Dual-tether hem drawcord
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