Black Powder Coated Stainless Steel Hip Flask by Top Shelf Flasksô, 8oz This 8oz stainless steel polished powder coated flask is a great buy! The sturdy design, screw down cap, smooth and shiny surface and thick powder coating combine to make this a high quality buy at a super low wholesale price. This unique drinking flask sports a durable shiny black coating that not only looks great but adds durability and style! When you need to shop for hip flasks, shop at our store and save! This flask is perfect for engraving! Each flask is individually packed in a plain black box and comes with a limited lifetime warranty against defects.