You'll climb a mountain in the summer with climbing shoes and a tank top, and you'll climb the same mountain with winter's snow underneath your backcountry skis; the only thing that stays the same is Mammut's Trion Light 38 Plus Backpack. Mammut made this multi-purpose backpack incredibly versatile for year-round mountaineering missions ranging from fast-and-light alpine climbs to day-long backcountry tours. Its Motion T-Frame offers plenty of stable support for long approaches, and you can remove it when it's time to climb a few multi-pitches. This backpack also boasts plenty of carry systems specifically designed for skis, ice axes, trekking poles, climbing ropes, hydration reservoirs, avalanche safety gear, and more.