The Arête™ 18 is a transformer—it’s a sleek, ultralight pack designed for peak bagging, minimalist adventures and traveling. The Arête is lightweight and reversible, with the ability to transform into a reservoir sleeve that keeps your water supply insulated and secure within a larger pack. When you reach basecamp, just flip the Arête right side out and you’ve got a minimalist pack for day hikes and summit scrambles. The Arête 18 has ample room for hiking essentials like a headlamp, warm layers, food and a trail map. It also features a 2-liter reservoir, an adjustable sternum strap, a removable stability belt for a close, comfortable fit, and a lightweight back panel to give the bag a little more structure. We’ve also added zippered compartments on the lid and the side of the pack, so you can keep your gear sorted more easily.