Insulated Double Wall – Wine Tumbler features dual walls with vacuum insulated, Keep drinks hot and cold longer for a more enjoyable drinking experience. Premium Material – Wine glasses are made of 304 stainless steel. Electro polished inside.Ensure your cups unbreakable, rust resistant , sweat free ,Non-toxic and harmless.giving you a clean tasting drink every time! BPA Free Lid – The lid is made of AS, chemical-free.it comes with a removable rubber gasket . Wide mouth design and Drink hole on the top for easy washing. Stylish Colorful – Coffee tumblers will always feel smooth to the touch with a sweat-free design, and will keep its stylish colorful finish due to its long-lasting powder coating. 100% SATISFACTION – All HASLE OUTFITTERS come with a LIFETIME GUARANTEE! 100% Satisfaction or your money back.