Amazon Basics Rectangular Back Support Cushion for Office Desk Chairs, Memory Foam, Black

Amazon Basics Memory Foam Back Support Cushion This back support cushion provides all-day comfort. Its contoured shape conforms to the natural arch of your lower back. The mobile design allows you to take the cushion with you from one chair to another. The high-density memory foam provides firm, long-lasting support. The built-in elastic strap secures the cushion's back in place. The breathable cover is removable and machine washable.