This water bottle is everything you need it to be, without anything you don't. The bottle is double-wall vacuum insulated and features an unbreakable glass interior lining. This lining's got a few purposes: First and foremost, it'll keep your liquids from tasting like metal. (Big win, there.) On top of that, though, the lining makes this bottle exceptionally easy to clean, meaning that you won't have any lingering flavors or residue when you go to refill it. There won't be a coffee stain in sight. The surgical grade stainless steel body helps keeps liquids hot up to 12 hours and cold up to 24, while the leak proof top also doubles as a carrying handle for easily hauling. The design is simple and easily fits in your bag along with your other daily essentials.