This is a black cushion with an ergonomic design. It transforms a simple chair into a comfortable seat. It was very useful during the work-from-home era. Recently, I've been going to the office more, and the need for the cushion has decreased, so I'd like to sell it. Features: - W-cushion construction with gel and memory foam - Distributes body pressure that was concentrated locally - Anti-slip processing - Contoured design that fits the buttocks perfectly Information: - Weight: Approximately 600g - Materials: Core) Memory foam, Cover) Polyester Processing: Anti-slip processing on the back of the cover - Size: Height 6cm, Width 45cm, Length 37cm - Model: Memory Foam High Grade Model https://item.rakuten.co.jp/mygear/90xb086ldc55r/