1.[Safe and ] stainless steel wine Tumblers are made of high quality food 18/8 (304) stainless steel. Stainless steel stemless wine tumbler are insulated, durable, lightweight, lead-, and non-breakable. 2.[Small and Convenient] In daily life, we can pick up the 12OZ stemless wine tumbler, and the wine cups can hold our favorite drinks. It is very portable whether at home or outdoors, bringing more beauty to life. 3.[Double-layer insulation and heat preservation]The double wall wine tumbler adopts the double-layer vacuum heat preservation process, which can make the drink have a heat preservation effect for a certain period of time. Vacuum wine glasses can prevent the transfer of heat or cold, so as to protect customers. We want customers to have a good sense of use, keep the stainless steel wine tumbler at the temperature you want. 4.[BPA-Free Lid & Straw Friendly Design] The lid of stainless steel wine tumbler design BPA , lid with extra gasket sealed to provide splash proof capability. When you are drinking coffee, milk, and juice, you don't have to worry about leakage of the drink, and the non-toxic lid will not affect the quality of the drink. What's more, its drink hole on the top for easier sipping.