Inner Spring Mattress, 84" x 36", Firm Detecto Scale 5 PSI Operating altitude 0

5 PSI Operating altitude 0 to 7

Medium and Large nasal pillows

Pillow sleeves are sold individually

You may only need to replace the cushion every six months instead of the whole mask

4 Lip Valves

Inner Spring Mattress, 84" x 36", Firm Detecto Scale 5 PSI Operating altitude 0The Inner Spring Mattress by Drive Medical offers a high quality inner spring design ensuring you are at max comfort. The mattress has a vinyl cover that is waterproof, anti bacterial, and anti static for convenience and ease of use. The mattress is made of Premium Grade cotton and a high density urethane foam for maximum comfort and increased durability.