Sojoy SJ164A017 Cooling Breathable All-Gel Cushion for Car Drivers Seat or Office Chair, Orthopedic Specially designed with Gel material to ensure our cushion retains long lasting shape with no deformations Unique gel cooling structure for greater comfort and support Waterproof covers for easy cleaning and safe for washing on low settings; Dry on low heat or Air drying is recommended Removable zipper covers, with conformable top surface and non-slip friction bead grip bottom surface to ensure maximum comfort and prevent sliding Increased air circulation to keep your bottom cool