Insulated Double-Wall – Travel tumbler features dual walls with vacuum insulated, Keep drinks hot and cold longer for a more enjoyable drinking experience. Premium Material – Travel mugs 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. Fits Most Cup Holders – 20oz travel Mug lightweight and compact feel make it easy to fit into most car cup holders. Carry around your beverages whether home, office, picnic, hiking or camping adventures. 100% SATISFACTION – All HASLE OUTFITTERS come with a LIFETIME GUARANTEE! 100% Satisfaction or your money back.