The Hydro Flask 21oz Standard Mouth is the perfect travel companion to keep your drinks cold all day long. The versatile size of this water bottle makes it easy to carry around and lets you stash it in a bag, side pocket or cup holder. Hydro Flask Water Bottles are built like tanks and come with a lifetime warranty. They’re made from durable 18/8 pro-grade stainless steel and are coated with a proprietary powder coat that gives you an easy-to-grip, sweat-free and extra-durable bottle that you can take anywhere. The cap easily screws on and off when you need a drink and has a handle, so it is easy to bring along on your walks or hikes. Use it to keep water cold during your workout or to keep coffee hot on your morning commute—Hydro Flask’s TempShield™ insulation eliminates condensation and keeps beverages cold for up to 24 hours and hot for up to 12 hours. Lightweight, durable and easy to clean, the Hydro Flask 21oz water bottle is BPA-free, Phthalate-free and dishwasher safe so you can use it time and time again. Plus, it’s compatible with the Standard Mouth Insulated Sport Cap.