Durable, double-wall stainless steel vacuum construction with copper insulation, which allows your beverage to stay cold for 48 hours and hot for at least 12 hours. The construction also prevents condensation on the outside of the bottle. On-trend, high gloss coating including anti-microbial additive keeps your drink-ware surface from getting contaminated. Stainless steel screw-on, spill resistant lid with durable stainless steel hand loop. Wide opening for comfortable filling and pouring.