Features: Soft fabric and good elasticity of PVC gasbag is durable, comfortable and environmental friendly. Ergonomics design can fit for the shape of your hip well and distribute the gravity uniformly, it can also help to reduce partial oppression and relieve pressure on the spine to prove you a safe and healthy sitting. This seat cushion is designed to relieve backaches, numbness, and discomfort when you sit. It is inflatable, provided a pump this will be more convenient to use and store. Suitable for people who trouble with hemorrhoids, coccyalgia, bedsore, ischialgia and other anal disorders. Specifications: Condition: 100% New Item Type: Seat Cushion Material: Plush Fabric + PVC Optional Color: Red, Green, Blue Inner Diameter: Approx. 12cm / 4.7inch Outer Diameter: Approx. 34cm / 13.4inch Suitable Weight: Below 85kg Package Weight: Approx. 122g Instructions: 1. Insert the air pump outlet into the inflatable port of the seat cushion. 2. Tighten the gas nozzle after inflated in case of leakage. 3. Gently pull out the seal ring and pinch the seal ring, when you hear the sound it starts deflate. Package Include: 1 x Seat Cushion 1 x Pump