WATER RESISTANT OUTDOOR CUSHIONS: Patio chair cushion cover is made of 100% durable polyester fabric that is water and fade resistant，In addition, In addition, the hidden zipper prevents rain from seeping in. | STURDY AND DURABLE FABRIC: Our outdoor seat cushions are made of 300GSM high-density polyester fabric which is water and stain resistant. The fabric can withstand daily wear and tear, but it is recommended not to be exposed to the hot sun for a long time to preserve lifespan and maintain appearance. | HIGH QUALITY SUPPORTIVE FOAM: The patio furniture cushions are filled with 2 inch thick high-quality foam, which has excellent elastic support and good resilience performance, provides your body with additional support and comfort, reducing pain in your lower back, hips, and sciatic nerve. | DOUBLE REMOVABLE COVER: Unlike many other outdoor cushions, ours has two layers of removable cushions with zipper, so you can easily clean and wash it. And outdoor cushion is a built-in double layer with delicate sewn edges to added aesthetics and ensure greater durability under pressure. | WIDELY OUTDOOR/INDOOR USED: 16"x17"x2" round corner seat cushions suitable for most standard size chairs（It is recommended to measure the chair before purchasing）. Two corner straps can firmly secure the cushion to the chair. The simple and fashionable outdoor seat cushion is perfect for use in courtyards, balconies, gardens, and indoors.