Didn’t fit me right. Worn twice. Great goretex shell. Here is the description from the website. Mammut designed its Crater HS Jacket for the unpredictable and frequently harsh conditions you’ll encounter in the high alpine. It’s composed of a highly waterproof and breathable three-layer Gore-Tex shell to keep pace with fast-moving ascents, while a simple yet effective design delivers critical coverage without adding unnecessary bulk or weight. The hood, which can be adjusted at the back and front, fits over most climbing helmets and is bolstered by easy-to-access underarm vents to let excess heat escape, preventing wet base- and mid-layers when you’re pushing through high winds and heavy snowfall.