Glass Travel Mugs keep coffee, cocoa and tea piping hot and cold drinks like water, soda and juices very cold. Another great thing about these mugs is that they are spill-proof and do not require the need for a sleeve because double insulation protects against cold and hot temperatures. One other fantastic feature about these mugs is that they do not fog up like some clear mugs do and will also look nice and clear. Also, the mugs and lids are BPA-free and lead-free and are safe to put in the microwave and dishwasher. People love this type of mug because it does not get that awful plastic or metallic taste when they take a sip of their favorite beverage from the mug. The mugs come in various sizes and colors and can be taken anywhere. Plus, they fit most standard car cup holders.