About Size: Seat 46×23×3",Back 28×23x3". Be sure to measure your chair seat before buying; if size difference is over 0.5",think twice. Designed to add comfort and a fresh look to your chairs. Assembly is required Waterproof & Durable: Made of 100% polyester,this breathable,UV- and fade-resistant cover keeps your cushion looking fresh outdoors. Hidden zippered design allows easy cleaning and replacement while maintaining a seamless,polished look Upgraded Cushion & Pillow: The seat cushion is 100% polyurethane foam for soft,supportive comfort that eases pressure and helps you relax. The pillow is 100% polyurethane. Cushions arrive compressed—let sit 24h to fully rebound Non-slip Ties & Piped Edge: Keep your outdoor cushion securely in place with easy-to-use ties. Reinforced piped edges add durability and a stylish finish,so your seating stays comfortable,neat,and inviting Wide Use & Tips: These lounge chair cushions add cozy comfort to chaise lounges across pools,patios,balconies,decks,backyards,and gazebos,making your outdoor space more inviting and relaxing.