Nitori Low-Resilience Back Support Cushion It has a strap on the back, so it can be easily attached to chairs and sofas. The cover is removable and washable. Size: Width 42 x Depth 34 x Height 9cm Weight: Approximately 620g Used only a few times, and there are no noticeable stains, but please understand that this is a used item stored at home. We plan to ship it as compactly as possible.