- Safety certification: metal water bottle tested by a third party, BPA and phthalate free - Additional protection: silicone sleeve that prevents scratches and dents - Improved insulation: triple wall vacuum insulation technology that keeps cold for 27 hours and hot for 13 hours - Wide mouth lid: balances gravity and prevents finger pain - Does not fade or peel: powder coating that keeps the cup shiny and sweat-free - Electropolished inner wall that keeps the cup pure, rust-free and odor-free - Sweat-free design: prevents condensation and sweating - Leak-proof straw lid: thick rubber ring that prevents leaks - Leak-proof spout lid: does not drip even in a backpack