1.Comfort and thickness: this seat cushion is filled with highdensity material (such as PP cotton or sponge), provides soft support and is suitable for long lying down. Thickened design (usually 510cm) increases comfort, especially suitable for outdoor reclining chairs or sun loungers. 2.Nonslip design and attachment method: the top is made of nonslip fabric (such as Oxford cloth or silicone coating) to prevent movement during use. Some styles are equipped with straps or elastic bands that can be firmly fixed on the lounge chair to prevent it from falling off when blowing or moving. 3. and durable materials: the outer layer is mainly made of waterproof Oxford cloth or highperformance polyester fibre, which is waterproof and easy to clean, suitable for outdoor use. Some products also have antimould and antiUV properties, which extends their life. 4.Indoor and outdoor dual use: designed to balance outdoor weather resistance and aesthetics indoors, suitable for balconies, gardens, poolside or closed patios. Some styles use colour schemes matched to the interior decoration to enhance the overall style.