The Summit 300 half zip is designed for the summer Alpine climber with a waist high clip-in possibility and minimal features. Summit bags have been designed primarily for cold weather and high altitude mountaineers, but also for all adventurers entering hostile environments. The Pertex� Endurance outers offer maximum protection from the elements and top quality down fill gives great warmth for weight. Filled with 96% goose down on the top, 85% duck down on the base. Fill power 750+/ 560+ EU 850+/610+ US Weight 820g Comfort -2�C Dimensions 210 x 75cm Pack size 29 x 16cm