Rab's women specific Summit 600 Sleeping Bag is light for backpacking adventures and warm for most nights in the alpine. Its 650 fill down insulation has a hydrophobic treatment to stay warm in moist conditions. Rab wrapped this innovative insulation with an ultra thin Pertex Endurance fabric for air permeability, breathability, windproofing, and high levels of water resistance. The Summit 600 also features a snug, weight saving mummy shape, and the angled footbox prevents your feet from feeling too cramped. There's also an anatomically designed 3D draft collar so you don't feel any cold drafts through the full length zipper. Rab added an internal stash pocket for your headlamp, and included storage and compression sacks add convenience.