When you are snowboarding with a backpack you want the most seamless and comfortable fit, which is what we focused on here by adding the size adjustable carry system with CROSS_WINDS™ ventilation, compression straps, and The Koroyde EOP 1.0 back protector for added support, breathability, and protection from bag to body. This is our team riders dream snow pack because it has everything you need for AK lines, to weekend park days.