The Arc'teryx Silo 40 Backpack carries either skis or a snowboard and holds enough gear for a full dawn-to-dusk day or backcountry riding.
The Arc'teryx Silo 30 Backpack holds everything you need for a half day in the backcountry, and it has the versatility to let you travel on skis or a snowboard.
Arc'teryx made the Silo 50 Backpack large enough to take on a weekend ski tour and versatile enough to carry everything whether you prefer AT gear of a splitboard.