A bottle built for serious drinkers, the Master Vacuum Bottle by Stanley is ridiculously insulated it can keep your drinks piping hot for 40 hours, cold for 35 hours, or iced for 160 hours. Quite possibly the strongest thermos available, it’s built with a tough steel handle with silicone grip, steel-lined pour through stopper, and a 1mm 18/8 stainless steel, rust-proof and BPA-free interior. Also included is a Vacuum insulated stainless steel cup that can keep drinks hot up to 20 minutes.