The Osprey Mutant 22 is a 22-litre pack for single-day ice and alpine climbing, weighing 635 g (about 28.9 g per litre). Dual ice tool locks and side loops that rig an A-frame ski carry cover the approach and the climb itself, while the close-to-body fit keeps the pack from swinging around on exposed or technical moves.
The padded hip belt is removable, so you can strip it entirely for the lightest possible carry once you're on route and the pack is riding mostly empty, or keep it on for a heavier approach load. It's built from the same recycled 210D nylon as the larger Mutant packs and is hydration compatible.
At 22 litres this is a day-climbing pack, not a multi-day one — enough for tools, a rack, and a layer or two, but there's no removable lid or framesheet listed here, so it's a simpler, lighter build than the larger Mutant packs in the range, aimed squarely at single-push objectives.