Hands down the baddest, brawniest water bottle you'll find anywhere. Built to fall off skyscrapers and bang around in the back of your pick-up without cracking, splitting or springing a leak. The premium quality 18/8 stainless steel casing is a full 1mm thick, more than 40% thicker than standard – feels like an artillery shell. 4-layer QuadVac™ insulating technology (even in the lid!) keeps beverages hot/cold for 18 long hours, and keeps ice for 3 solid days. Plan on it being the last water bottle you'll ever need to buy.