Seat Dimensions: This outdoor high-back cushion comes in two size options, 20" x 37" x 2.8" and 21" x 44" x 3.2", available in sets of two or four, designed for outdoor chairs or furniture with backrests Solution-Dyed Fabric: The fabric of this cushion is solution-dyed, ensuring color retention for an extended period. The dye molecules are locked into the polymer chain during fiber formation, resulting in exceptional color fastness Segmented Design: This cushion features a segmented design, allowing the headrest and backrest to be adjusted to various angles, better accommodating your outdoor furniture and providing a comfortable experience Cushion Details: Secured with four straps, this cushion stays firmly in place, while the 25D resilient foam ensures a comfortable and relaxing outdoor experience Critical Measurement Guidance: Carefully measure your chair's exact dimensions to ensure proper fit. Our cushion sizes are calculated using seam-to-seam specifications. To guarantee optimal placement, allow 5/8"-1" clearance margins around your chair perimeter when positioning the cushion The outer cover of this cushion is crafted from polyester staple fiber, boasting a remarkable 1000-hour lightfastness. It features a TPU coating for superior water resistant. The segmented design ensures a perfect fit for your outdoor chair, while the four-strap system securely fastens it to your outdoor furniture