Purchased on Amazon on 2024/8/23, tried once, and then stored at home because it didn't quite fit. Therefore, it's practically unused. Please refrain from purchasing if you are concerned. Benazcap X Large Memory Foam Cushion, Ergonomic Cushion, Relieves Back Pain, Improves Posture, for Office Chairs, Wheelchairs, and Cushions, Prevents Buttock Pain, Breathable, Non-Slip, Washable Cover Brand: Benazcap Features: Ergonomic Cushion Size: 48 x 43 x 15cm Target Age: Adult Material: Foam Care Instructions: Machine Wash