From hiking to summit pushes, having a fully-featured shell jacket is a necessity. The Helly Hansen Verglas Infinity Shell Jacket 2. 0 is one of our favorites for adventures in the backcountry and features a 3-layer membrane to ensure we stay dry and comfortable. The zippered vents allow us to dump excess heat when we are getting too hot, and the adjustable cuffs and hem ensure the cold drafts stay out. The helmet is fully adjustable and helmet-compatible, so we can stay covered on the move.