Universal Fit: This outdoor lounge cushion features a seat size of 44 × 21 × 3 in / 1117.6 × 533.4 × 76.2 mm and a backrest size of 28 × 21 × 3 in / 711.2 × 533.4 × 76.2 mm, designed to fit most standard lounge chairs. It offers full-body support and lasting comfort. For optimal fit, please measure your chair before purchase. Thick, High-Density Foam: Filled with 28D high-resilience foam up to 3 in thick, our chaise lounge cushion is soft, supportive, and quickly rebounds after use. Whether you're relaxing for hours or moving it frequently, this outdoor furniture cushion stays plush and supportive. Tip: Allow 24 hours after unpacking for full expansion. Water-Resistant & Fade-Resistant: Crafted from premium polyester fabric, cushions for lounge chairs resists water and fadingideal for outdoor use. Whether under direct sunlight or in light rain, it stays in great shape for long-term enjoyment