How many liters do I need for a 2-night hut trip?

For a 2-night hut trip, 38–45L is typically sufficient. This accommodates a sleeping bag liner (huts usually provide blankets), 2–3 days of food, a stove and fuel if the hut lacks cooking facilities, extra layers, and your standard avalanche safety gear. If you are winter camping instead of using a hut, bump up to 45–50L for the sleeping pad, full sleeping bag, and tent or bivvy. Pack your gear and measure the volume before buying—many skiers overestimate how much capacity they need.