You do not venture out of bounds—be it sidecountry or backcountry—without the necessary safety equipment. Period. And why would you, when there are compact, lightweight, and comfortable backcountry backpacks and ski touring packs out there that make hauling your gear a piece of cake? The newest ski-specific packs come with all kinds of high tech bells and whistles, including avalanche airbag compatibility. Here are SKI’s top picks.