High-quality materials: The outer layer of the cushion is made of high-quality Oxford cloth, and the inner filling is pearl cotton, which is light in weight, durable, odorless, non-fading, good elasticity, and good toughness. Insulation pearl cotton: pearl cotton is not cotton, but a new type of environmentally friendly foam, which has the characteristics of waterproof and moisture-proof, cool and heat insulation, tough, elastic, and tasteless. Waterproof and corrosion-resistant: The pillow bottom is made of silver-plated Oxford cloth, which has excellent waterproof performance and can be used in humid environments. The cushions are washable and machine washable. Portable design: 8 sides can be easily folded and stored, small in size, easy to carry, and can be used anytime, anywhere. There is an elastic band on the side so that the cushion can be fastened easily after storage. (Each cushion also comes with a storage bag) Suitable for various indoor and outdoor places: increase the comfort of outdoor sports such as outdoors, parks, mountains, buses, classrooms, and beaches.