Load up the Mammut Trion Pro 507 Backpack before embarking on an ambitious big wall ascent or alpine climb. This lightweight, made to move pack boasts the intuitive design and features you need to play it safe and smart while adventuring at altitude, and it accommodates all the hardware you need to navigate an ice flow broken by granite outcroppings. The Motion Butterfly DLT suspension spreads the load evenly across the high density EVA foam back panel, shoulder straps, and hip belt, while the front and side compression straps lock your load down to prevent moving when you're covering ground or packing away the vert. Mammut made the Trion from water resistant nylon fabrics, so your gear won't get soaked in a shower, and made the Trion compatible with hydration reservoirs, too, so you don't get dehydrated on your alpine missions. While it carries comfortably, it's unmistakeably an alpine pack, and it has features you'd expect like a webbing hip belt that can be used in place of the padded offering, a top rope strap to secure your line, and a removable, seam taped lid that you can take off to lighten your load. There are also two secure ice axe carriers, sky carry options, and gear loops to accommodate whatever gear you need for your current climb, so you're never caught out by the changing conditions that are a feature of alpine environments.