Features These cushions are 1.6 thick with firm sponge foam and are designed to be a perfect fit for our clear chairs. To prevent slippage, the outer cover has Velcro straps for quick and easy attachment to the chair’s back frame. A hidden zipper is also included to allow for removal of the inner cushion for simple cleaning. Skid -proof Rubber Backing – The frustration will be caused by chair pads when they don’t stay in place. Even chair cushion with ties still move around. We have designed the best way to keep our chair pads stay well on your chairs with non-slip rubber backing. And 2 elastic bands with fasteners can be fixed to the back of your chair protect chair padding from moving. Comfortable And Ergonomic Design – Adding memory foam cushions with good support force decreasing pressure on the coccyx and relief you from pain of sciatica, herniated discs, tailbone injuries, etc. FOH Seat Cushion is soft, reducing the uncomfortable caused by the long-term sitting. Durable And Long Lasting – We want you to be sitting on FOH Memory Foam Chair Pads for chairs and seat cushion pad! Strength and durability and built into every inch. Our cushions are MACHINE WASHABLE! Machine wash cold, do not bleach, do not iron, just tumble dry with no heat and your chair pads will look as good as new. Sit with comfort and relaxation, sit with FOH Chair Pads! Package Includes Parts for assembly of 30 chairs.