Comfortable cushion made by VARILITE, compatible with OX wheelchairs. Size is 35x35, Stratus model. I've been using it until now, but I'm starting to use a new cushion. This is a used item, but the manufacturer's suggested retail price is 60,000 yen. - Product Type: Cushion - Instruction Manual: Japanese - Air pressure adjustment: Simply turn the black cap to inflate. - Deflation: Sit in the wheelchair, turn the cap, and close it.