Ascent I, -4C / 25F, Long 4.7 x 3.5 x 3.5 in / 11.9 x 8.9 x 8.9 cm and the fine side a

and the fine side a grain size of 600

the flexibility of Spandex

the unique WaveLoft construction allows the Thermolite insulation to expand out into air-trapping curves for maximum warmth

a highly motivated 22-year-old Brit who had cut his teeth climbing in Europe with some of the most respected mountaineers of the time

Ascent I, -4C / 25F, Long 4.7 x 3.5 x 3.5 in / 11.9 x 8.9 x 8.9 cm and the fine side aThe Ascent down mummy sleeping bag redefines the meaning of versatile. Complex construction and high quality down keep you warm when it's cold outside, while the triple zipper Free Flow Zip system ensures you stay cool and ventilated when the weather warms. Shaped to allow a natural sleeping position for comfort, while light and compact enough to go anywhere.