Aluminum Sport Water Bottle, Great for Outdoor and Sport Activities. Plastic Screw lid Looped on The Top Design: These Colorful Aluminum Bottles have a narrow mouth and a plastic screw lid, LEAK PROOF. Portable: The loop on top makes it easy to carry on. You can clip it to your backpack or bike. Versatile: You can use it for any outdoor activity or sports where you need to stay hydrated. Keeps cold liquids cool. Not for hot liquids. BPA FREE, hand wash recommended.