Made of stainless steel with copper plated inner, triple insulation technology: double-walled, vacuum-sealed and copper-plated, keeps drinks cold 9+ hours and hot 3+ hours, holds most 12 oz cans and glass bottles including beer, soda, and sparkling water, fits most standard cup holders, Swig Life is a certified swam owned business, meets FDA requirements, BPA free, dishwasher safe.