Clean the mattress before storing. Close any air intake valves to prevent water from getting inside the mattress. Clean minor dirt and dust from the surface of the mattress with an all purpose cleaner and soft cloth. For stuck on dirt or mud, stick the mattress inside a bathtub. Use the shower to spray the entire mattress. Use a soft bristle brush to gently scrub both sides of the mattress.
Dry the exterior of the mattress with a towel. Try to soak up as much of the exterior water as possible with the towel.
Open the air intake valve. Hang the mattress upside down with the valve pointing toward the ground. Outside on a clothes line is best, but you can also hang the mattress from a shower rod. Hang the mattress for 24 to 48 hours or until it is completely dry. This also works for draining water out from inside the mattress.
Roll the mattress into a cylindrical shape. How tightly you roll the mattress depends on the kind of mattress that you own. If you have a Neo Air mattress, you can roll it as tightly as possible. Store a self-inflating mattress unrolled and flat. Store a closed cell mattress loosely coiled.
Slide the mattress into the storage sack. Place the mattress in a dry storage area where the temperatures do not rise above 80 degrees. For mattresses that you have to store flat, you can slide them under a bed and cover with a blanket to protect the surface of the mattress from dust.