Material: Sponge~Can add to yoga singlet and swimsuit~Diameter: 12cmThickness at the thick part: 1.9cm /><img src='http://www.econzone.tk/images/201803/desc_product_img/6c8d3977407b7976cb29a9c098cc20dc.jpg' alt= /><img src='http://www.econzone.tk/images/201803/desc_product_img/7717345d1f3e101fa3dec56aebc9db4a.jpg' alt= /><img src='http://www.econzone.tk/images/201803/desc_product_img/18f136b935d752f421d7da4299edad4b.jpg' alt= /><img src='http://www.econzone.tk/images/201803/desc_product_img/a7c6664a6244e29300ad9f8005ebb615.jpg' alt= /><img src='http://www.econzone.tk/images/201803/desc_product_img/cb4a05bc9d5e4ccabe50cdbffeee4a10.jpg' alt=