Dimensions:20.5"x13"x4"(52cmx33cmx10cm)(adjustable height by taking out some filling.) * Material:100% natural high-quality more than 5 years old bamboo,filled with dry jasmine and tea stems. * Fresh jasmine petals after the dehydration air-dried process has the beauty function and help you get into sleep better. * Features:Cool and fragrant smooth, good ventilation, non-stick sweat and no curl, it has beauty and health function. * Anti-bacteria and anti-mildew