Zak Designs Trek Aluminum 16 oz. Aluminum Water Bottles, Black 16.5-ounce aluminum water bottle is durable and lightweight making it the perfect hydration accessory for outdoor activities and people on the go 16.5-ounce size is easy to bring along in a backpack, duffle, purse or lunch bag Generous easy-carry handle on lid makes this bottle easy to carry in hand or attach to a pack Screw-on lid has silicone gasket, making the bottle virtually leak-proof Made of BPA-free Aluminum; hand washing is recommended