The outdoor deep seat cushion is a set of 2 pieces. The seat+backrest, double bone design, high-end fashion, cushion foam thick and elastic, made of 100% polyester fabric. The cushion rebounds quickly and can be restored to its original state after each use, providing you with an extremely comfortable feeling. The cover is made of YARD-DYED fabric. It has undergone UV treatment and is water resistant. In addition, the seats have been equipped with straps to ensure strong anti slip performance. The seat size is 24"x24"x4"; the backrest size is 22"x24"x6". They are the best choice for outdoor and indoor furniture, especially when paired perfectly with chairs or sofas in courtyards, sunrooms, screen rooms, front porches, and backyard, they will definitely make you feel relaxed and comfortable.