Zak Designs Planet Zak Trim 19 oz. Aluminum Flask, Moss 19-ounce aluminum flask is durable and lightweight making it the perfect hydration accessory for outdoor activities and people on the go Traditional flask shape is handsome and functional and comes with a carabineer Carry in hand, stash in a pocket or hook to a backpack or tote Screw-on lid has silicone gasket, making the flask virtually leak-proof Made of BPA-free Aluminum; hand washing is recommended