Sea to Summit Sleeping Bags
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Sea to Summit Sleeping Bags Spreading the warmth
Two days ago, I fielded a customer service phone call about our new range of sleeping bags which left me with a warm feeling. Not because the customer went on to order bags from one of our retail partners (although that was the outcome of the call); the warm feeling came from our engaging dialogue about the details of sleeping bag construction and how these details affect performance.
The breakthrough for this consumer was the recollection of a cold night in an otherwise warm sleeping air max bag from another manufacturer where the zipper was inadequately baffled by the draft tube. The bag’s advertised ‘inches of loft’ and the claimed ‘temperature rating’ were irrelevant the customer could feel the cold seep into the bag along his back.
Ask anyone who works in retail and t air max hey will tell you: around 40% of all customers who buy sleeping bags are subsequently disappointed by their real world performance
There are many places where heat can ‘leak out’ of a sleeping bag, even air max a bag which looks nice and puffy hanging in the store. A poorly executed draft tube can ‘flip over’ or crush flat and allow heat to escape through the zipper. A hood which compresses the insulation when cinched closed fails to maintain the sleeper’s temperature, just as a foot box does which doesn’t mold itself snugly around the sleeper’s feet air max . The devil is in the details regarding sleeping bag construction and warmth.
Which brings me to the present: I now have another warm feeling I am holding a brand new Traverse XTII.
Its beautifully constructed chambers allow the 850+ fill power down to deploy to just the right density through out the bag and because the down has a high degree of ‘cling’ (mature down plumules have tiny barbs which make them stick together to form large clusters), the down forms an even, homogeneous layer (unlike those bags which have ‘gaps’ when you hold them up to the light).
The hood, foot box and draft tube are all complex constructions which also keep that down just where it is needed to prevent heat escaping and maintain your sleeping comfort. And the bag is cut overall to allow enough room to move without your knees, elbows or shoulders compressing the down (as is the case in those ‘pencil thin’ bags).