6oz. Cork Stainless Steel Flask (Sold by Case of 10)Flasks made great promotional and personalized gifts, and this flask covered in curable, eco friendly cork takes them up a notch. The cork lasers to a stunning black contrast, and top stitching all around the top and bottom give it a finished look. Cork is taken only from the bark of the tree, making it one of the most highly renewable resources on the planet.