Double antislip design Each sun lounger cushion has one fastening strap on the back and two antislip straps on the sides to keep the cushion firmly in place. It stays put even with frequent turning, preventing slipping on garden loungers. Waterproof material and comfort Made of waterproof, wearresistant polyester fabric. Uses 50D elastic foam for good elasticity, providing comfortable seating for long periods. Ideal for relaxing on a lounger or as a cushion for other furniture. quality workmanship and support Exquisite workmanship with fine stitching that resists unraveling, ensuring durability. Concave and convex design helps prevent the buttocks from expanding outward, relieves pressure, and promotes relaxation for restful sitting. Universal compatibility and applications Expanded and thickened design fits almost all indoor chairs, office chairs, and car seats. Suitable for patios, rocking chairs, garden chairs, dining chairs, deck chairs, lounge chairs, sun loungers, garden loungers, benches, etc. The product does not include lounge chairs. Use scenarios Use on a sun lounger for comfortable, extended outdoor lounging. Place on garden chairs, dining chairs, or patio benches to improve seating comfort. Use on car seats or office chairs to enhance comfort during long trips or workdays.