The Summit is in a league above most other duvet jackets. It packs 250g of down insulation into a box wall construction for ultimate efficiency, minimal cold spots and oodles of insulation. In short if you feel the cold, go for this as it is warm as it gets. There is also a detachable down hood to make this a more versatile garment. There are two external pockets, two internal pockets and you get a stuffsack, features that are common among most jackets. The shoulders, sleeves and waist are also reinforced for hard use. If you want a little extra warmth and superb practical features this is the best down jacket we’ve seen. Ideal for regularly winter campers, Alpine use and those who feel the cold a little more. Considering what you get, the price is okay. But at 980g this is a heavy option (that said, it is warmer than most and better featured too with a hood and reinforcement). All that extra warmth may be too much unless you’re heading for the coldest corners of the British mountains or you simply feel the cold a great deal. The higher price tag and weight are also drawbacks unless you really need the higher level of performance.
Outer: Pertex Endurance
Insulation: 250g of 660 fill power goose down
Sizes: S-XXL (men’s); 8-16 (women’s)
Weight: 980g (men’s size L)
Made in China
Stores in UK: England 56; Wales 12; Scotland 14; Ireland 2
Verdict: Buy it if you want real warmth and performance for regular cold winter mountain use, rather than a lighter-weight and therefore less warm option.