Four inches of air, a pillow with a cradle for your head and a pump in the foot of the pad. The Lumin AIR is the Nomic pad for nights when comfort comes first, whether that means a cot in a canvas tent, the back of an SUV or the guest room floor. Filled, it measures 79 by 26 inches and about 4 inches thick, with a 6 inch pillow at the head end and wide air tubes across the body, so there's room to turn over and enough height for side sleepers. The shell is 75 denier diamond ripstop polyester with a TPU coating and wipes clean after a trip. Filling it: close the valve on the pillow and open the valve at the foot. Cover the foot valve with your foot and press down, lift your foot so the pump refills, and repeat until the pad is firm, then cap the valve. Keeping the valve covered on every press sends the air into the pad instead of back out. Air cools after dark and any air pad softens a little with it, so a few presses at bedtime keep it firm until morning. Packing up: open the valve on the pillow, roll the pad toward it to push the air out, close the valve and slide the pad into its sack. Taking care of it: keep it on a tent floor, cot or ground sheet, away from campfire sparks, and store it unrolled with a valve open between trips. Heading out on foot with a light pack? The 2 inch SOLAIR rolls up smaller.