✅ SUPERIOR QUALITY: We designed this Insulated tumblers specifically for Beer lovers. We aimed to use the best material and applying the ergonomic design in mind. This insulated tumbler beer glass is made of stainless steel 316 (18/10) grade that is a stable and suitable material for your crafted beer, cocktail, and any cold drinks, best in the class. ✅ SUPERIOR INSULATION: It is double walled vacuum insulated with additional copper coating layer to achieve the best insulation performance. It keeps your beer ice cold. No more warm beer. Enjoy this Beer Pint Insulated Tumbler with your favorite Pilsner, IPA, Stout, Cider and more. No need to pre-Chill like gel filled plastic mug, with wet surface. The Drinco THOR Beer Insulated tumbler is sweat-free. ✅ KEY FEATURES: Built-in bottle opener for convenience; Mirror polished finish inner provides no stain, no residual smell, wipe to clean; Round inner bottom design that easy to reach to clean, Easy to open with extended tab on the lid.