FENTI Polyester Solid Color Chair Pad with Ties, Ultra Soft - Dual Use, Seat Pad Back (15 x 15, Pink) Polyester 15 x 15" for widest side, 13" wide in middle. 100% Polyester outside material, will get wet but dry quickly. Recommend indoor use. Attaching tie-ropes to fix your chair; Make you feel comfortable and soft no matter at home or office Pain relieve, both use as seat pad and back cushion pillow, Please check size in detail before purchase. If there is no item quality issue/defective, chair pads cannot be returned.