Thank you for viewing. This is a wheelchair cushion, the Terraflare. I used it for about six months. No air leaks. I will include a new air pump and instructions (a few pages in Japanese) and a care kit for when a hole is made in the air portion. It's a cushion that combines a ROHO cushion and a low-rebound cushion. Size: Width 40.5 cm Depth 45.5 cm The "Terraflare" is designed with a unique design and materials to balance the two conflicting elements required of a cushion - stability and pressure relief. Product Features ・Pressure relief effect by air cells ・Relieves skin damage on the buttocks ・Excellent stability Recommended for: ・Those at high risk of pressure sores ・Those who value stability ・Those who have given up on air cell cushions Please understand that this is not new and unused before purchasing.