HOMYSNUG Memory Foam Seat Cushion With Anti-Slip Bottom, Pain Reducing Seat Pillow with Orthopedic Design, Relieves Lower Back Pain, Sciatica, Pregnancy & Maternity for Car, Office Chair & Wheelchair Sciatica And Back Pain Relief - Design for supporting caudal vertebrae can reduce the stress and pain of caudal vertebrae (tailbone). It can better fit your caudal vertebra and no burden will be increased even if you have a long sitting position; Ergonomic And Therapeutic Design - HomySnug seat cushion made of premium high-density rebound memory foam, designed to maintain its shape forever, and it is more suitable for human engineering with the center hollow space bowling; Advanced Memory Foam Seat Cushion Heat Responsive - Responds to the heat of your body to mold perfectly to the shape of your bottom. This cushion is thick enough to provide you with everlasting comfort yet keeps its shape to support your tailbone, lower back, spine and hips from those severe pressure points; Washable And Non-Slip - Comes with durable, removable, machine washable 3D mesh zip cover; The disassembly and cleaning of our cushion cover are convenient, which meets the needs of each family. Anti skid materials are used at the bottom to avoid any sliding; Widely Application - This memory seat cushion is lightweight, small,and easy to carry. Can provides softness on any hard flat surface, such as office chair, car seat, wheelchair and airplane seats;