The Luxurious Comfort Of Gel Combined With Contoured Support For Any Seat Anywhere The Obusforme Gel Seat Is Ergonomically Designed With A Contoured Shape To Help Support You In Proper Upright Posture While The Gel Insert Provides You With Luxurious Comfort. Black This Seat Cushions Unique Gel Grid Design Provides Different Zones Of Comfort And Support For A Luxurious Sitting Experience Dense Gel At Front And Back Of The Cushion Provides Firm Support To Help You Sit Upright. Memory Foam Base Molds To The Body?s Shape Mesh Center Allows For Increased Air Circulation To Keep You Cooler Flexible Design Allows For Use At Home In The Office Or Car And Is Easily Folded Into Luggage Lightweight And Portable Hypoallergenic Cover Can Be Removed And Spot Washed Use Together With Any Obusforme Backrest Support Item Measures 18 L X 17 W X 2 H Endorsed By The Canadian Chiropractic Association