This cushion is filled with 4 in high resilience foam.The outdoor patio cushions fabric has basic waterproof function.with dense anti-slip particles to prevent sliding. This outdoor seat cushions cover can be removed for cleaning and replacement. Just throw the couch replacement cushions cover in the washing machine.Our sofa covers and cushions come already placed, so there is no need to spend time tucking the cushions into the covers,can be freely combined. The 14-Piece Patio Cushions are vacuum-sealed. Upon receiving the items, all you need to do is unpack them and let them sit for 3-4 hours, allowing the sponge to fully expand.This 14 Piece Waterproof Outdoor Cushion is suitable for all kinds of 6 Seater Connecting Patio Parlor Sets, These patio cushions Include 6 Pack -Seat cushions (25.6Lx25.6Wx4H Inch),6Pack-Backrest pillow cushions (25.6Lx13.7Wx4H Inch), and 2Pack-Backrest pillow cushions (21.6Lx13.7Wx4H Inch).We also have 12 colors to meet your needs.