material : made of quality stainless steel; The wine tumbler cup is not easily broken, reusable, will not rust or leave a bad metallic taste in the mouth, and will not sweat or touch the cap feel hot br>Vacuum insulation technology :this tumbler cup has a double walled exterior with a vacuum sealed area between the walls, which provides insulation to keep your beverage hot or cold as long as possible; It will give you a good grip and will not sweat on the outside, no matter what temperature your drink is Are you still looking for a nice gift for friend? Get the friends wine tumbler to express your love. br> Offer an Unforgettable Gift to friend! br> This wine tumbler is a perfect gift for friend ,lightweight design is suitable for women extremely. br> Taste & Smell Free: br> No matter which kind of beverages you drink, our wine tumbler won't retain smell or taste. br> br> Suitable for All Occasions: br> Stylish outlook means that you may give this gift at any occasion, such as birthday, Christmas ,Thanksgiving Day.mothers day br> More Reasons to Choose Us? br> -Easy to clean, dishwasher safe br> -100% BPA free, non-toxic br> - Highly scratch & rust resistant br> -Wide range of using, home, picnics, camping, hiking, great for wine, coffee, tea etc. br>