Patent ID: 8087726

Claim:
A back cushion, comprising: an enclosure portion, having an internal space, a first layer and a second layer, wherein an elongated opening is provided in the second layer of the enclosure portion, the elongated opening is closed by using a hook and loop structure, both sides of the hook and loop structure have hook surfaces, and one side of the hook and loop structure is connected with the second layer having a loop surface for closing the elongated opening; a buffer portion made of silicone gel, synthetic rubber, latex or soft PU, which is fitted inside the internal space of the enclosure portion and is in contact with the first layer; a filler portion, which is fitted inside the internal space of the enclosure portion so that the front surface of the filler portion may be in contact with the buffer portion and the rear surface of the filler portion may be in contact with the second layer of the enclosure portion; and a fixing portion, which is connected with the second layer of the enclosure portion.