Many people think of glass， it is considered to be very cold things cold， in fact， this product is more suitable for female， you can soak in hot water use， because using a high-grade crystal and Swarovski crystal glass homologous raw materials， professional and has many years of experience in the crafts people at high temperatures of 1800 degrees， making elaborate hand-made. Do not worry about the high temperature hot broken. Want more heat， the more heat， choose your favorite heat， summer think there is more ice and more ice. Rainbow night. And streamlined design， rounded carved. Totally not harm the body. And when using the visual effect is very good

The maximum diameter 3.5CM
Minimum diameter 2.5CM