GDFHG Gel Enhanced Seat Cushion - Comfort Seat Cushion for Office Chair - Comfort Memory Foam Seat Cushion - Tailbone Cushion - Coccyx Cushion - Sciatica Pillow for SittingHIGH QUALITY MEMORY FOAM MATERIAL: Our 2nd generation office chair cushion features a revised formula with gel infused memory foam. made of premium quality durable memory foam with cool off gel layer on top for superior comfort. Our seat cushion features a non slip bottom for increased stability and a breathable mesh cover to help keep you cool SEAT CUSHION for OFFICE CHAIR: We use a "u" shaped ergonomic design to support the areas where you need it