Sleep System

Everything between you and the ground: an air mattress, a goose down sleeping bag and an inflatable pillow that pack small and carry light. The Ultralight Mattress Pro is 4 inches thick, has an R-value of 4.0 and inflates with a built-in foot pump. The down sleeping bag has a comfort rating of 50°F (10°C) and weighs 1.9 lbs.

How to choose

Start with the pad, because the ground pulls heat from your body all night. Side sleepers should look at thickness first: the Mattress Pro is 4 inches thick. Then match the sleeping bag's comfort rating to the coldest night you expect, and add a pillow if you usually wake up with a stiff neck.