S=17x16x2, M=18.5x16x3, L=19x19x3. This set includes four outdoor chair cushions, crafted from 300GSM polyester fabric featuring water-resistant and fade-resistant properties. The interior is lined with a Tpu waterproof layer, providing dual-layer protection against water. With a color fastness rating of Level 4, these cushions are built for long-lasting durability. The interior is filled with 30D high-density foam, offering superior support and effective cushioning, and is encased in a protective inner fabric liner to further extend the product's lifespan. Each cushion features attached ties to securely fasten it to your furniture, a zippered design for easy access, and a convenient carrying handle the piped edging helps maintain the cushion's shape while enhancing its durability. The cushion covers are removable and machine washable. The product is shipped via vacuum-compressed packaging upon receipt, please allow it to rest for approximately 24 hours to fully regain its original shape. Weight: 16.06 lbs.