Fade-Resistant Fabric: This high back cushion are made of solution-dyed olefin fabric, which is fade-resistant, and wear-resistant, keeping your patio cushions vibrant and durable, and performs better than standard polyester fabric Memory Foam: Our patio cushions are filled with thick sponge foam that provides excellent back support, while the quick-rebound feature ensures lasting comfort without sagging Non-slip Straps: Designed with adjustable straps and sturdy tie straps, the Aoodor water-resistant cushions stay securely attached to your high back chairs, preventing slipping or falling, thus ensuring a stable seating experience indoors or outdoors Hidden Zipper: Each cushion features a hidden, smooth zipper that allows the cover to be easily removed for cleaning. Simply machine wash or hand wash to keep your outdoor cushions for chairs fresh and inviting Note: Please allow cushions to rebound thoroughly from its vacuum sealed packaging for 24-48 hours prior to regular use This high-back patio cushion is crafted from fade-resistant, wear-resistant solution-dyed olefin fabric, outperforming standard polyester to maintain vibrant, durable quality. Filled with thick, quick-rebound memory foam, it offers excellent back support and lasting comfort without sagging. Equipped with adjustable non-slip straps and sturdy tie straps, the water-resistant cushion secures firmly to high-back chairs, ensuring stability for indoor or outdoor use. A hidden, smooth zipper allows easy removal of the cover for machine or hand washing, keeping the cushion fresh. For optimal performance, allow the cushion to rebound from its vacuum-sealed packaging for 24-48 hours before regular use.