The Rab Ascendor 45 Backpack boasts the biggest capacity out of any pack in Rab's all-mountain Ascendor series. Its 45L capacity leaves plenty of space for enough gear for full days of ski touring or summer climbing. There are external attachments for skis, splitboards, ice axes, and climbing ropes. The internal sleeve's sized for 3L hydration reservoirs. Rab's Tri-Flex carry system combines flexible mobility with enough support for carrying heavy gear. The back panel sheds snow along with the pack's Trishield and Hydroshield coated fabrics, and there's an integrated RECCO reflector to assist in search & rescue attempts.