Double Wall Vacuum InsulationThe insulated wine tumbler with lid adopts the technology of double walled vacuum insulation that keep beverages hot up to 3 hours or cold up to 9 hours and prevent sweating or condensation. So the vacuum wine tumbler will give you a better drinking experience in daily life all year round Food Grade MaterialOur double wall vacuum wine glass made of unbreakable 18/8 of 304 lifelong Stainless Steel that are sturdy,rust proof and sweating proof.Also the tumbler cup with special surface treatment reduces fingerprint retention and comes in vibrant colors,a special treatment that minimizes fading and chipping .Our 12oz wine tumbler are easy to hold and clean BPA-Lid &Straw Friendly DesignThe lid of stainless steel wine tumbler is BPA and Eco-friendly lid with gasket sealed to provide maximum splash proof capability and the non-toxic lid will not affect the quality of the drink.What’s more,its’ drink hole on the for easier sipping Occasions & ApplicationsOur stemless wine tumbler is suitable for home,office,picnics,parties.Unbreakable and safe for kids and adults. It is a cute,trendy and youthful colored small insulated wine cup that can meet your needs for hot or cold beverages: coffee,beer,champagne,cocktail,juice,milk,ice cream.This stainless steel wine cup is a for Birthday,Christmas,Valentine’s,Mother’s or Father’s Day Package included1*stemless wine tumbler+1*wine tumbler lid+1*stainless steel straw+1*straw brush.We provide high quality after sale service.If you are not positively thrilled with our wine tumblers,please contact us and we will make every effort to solve your problem.