Ship from Hongkong. Size: 45*45*3.5CM/17.7*17.7*1.4inch. Material: High Quality Sponge. Healthy cushion, ventilated and dry, Made of Linen & sponge of high elasticity, longtime use can maintain hip, back refreshed. Cushion can effectively control the temperature, adjust the humidity, Health Keeper, useful to relieve fatigue, quicken metabolism and cooling. It is a pure natural product and it is non-toxic, tasteless, no side effects. Perfect car decoration. Great gift to your friends/yourself.