Superior Comfort & Full-Body Support This high-back patio chair cushion is designed for all-day relaxation, featuring high-resilience shredded foam that provides excellent support and reduces pressure on your back and hips. With an oversized 42' x 20' design (seat: 20x20 outdoor seat cushion, back: 24' x 20'), it ensures a comfortable fit for patio chairs, lawn chairs, outdoor dining chairs, and rocking chairs. One-Piece Design with Secure Fit Unlike separate patio chair cushions set, this attached back & seat cushion stays in place effortlessly. Equipped with adjustable tie straps and an elastic band, it provides a snug and secure fit on outdoor patio chairs, deck chairs, and porch chairs, preventing shifting even in windy conditions. Weather-Resistant & Fade-Resistant Crafted from waterproof, UV-resistant fabric, this waterproof patio chair cushion withstands outdoor elements while maintaining its vibrant color. Ideal for lawn furniture cushions, outdoor rocker cushions, and patio furniture in gardens, decks, and porches.