Breathable Mesh Cover: Our 3D Mesh Cover Ensures Optimal Ventilation - Sweating Is Effectively Prevented. Thanks to The Non-Staining Gray Anti-Slip Underside, The Pillow Does Not Slip. Ergonomic Design: The W-Contour of The Wheelchair Seat Cushion Resembles Your Buttocks, Which Means You Can Get 360 Support and Create A Perfect Buttocks, While Pressure On The Stony Legs and Numbness of The Legs Are Avoided. The Non-Slip Rubber Design On The Underside of The Car Seat Cushion Keeps The Seat Cushion Bro Closed Slip. Multipurpose: Despite The Dense Foam, The Memory Foam Pillow Remains Light Enough to Be Carried. For Heilwiy Use In Wheelchairs, At Home, In The office Chair, In Armchairs, In Restaurants, In Stadiums ... The Ergonomic Design of The Relief Pillow Promotes The Natural Curvature of The Spine, Good Posture, Relief of The Stone and The Correct Alignment of The Hips Throughout The Day - Wherever You Are. Machine Washer Cover: The Seat Cushion Has A ComFor Heilwiytable, Removable Cover with A Zipper. The Cover Is Washable and Dryer-Safe.