Keep plenty of your favorite beverage on hand with the 8-oz. Stanley Master Flask. Constructed of food-grade stainless steel and equipped with a screw-down lid and gasket, it’s made to last a lifetime. Matte black coating is texturized for a sure grip. Customized with limited-edition Filson logo graphics.

William Stanley Jr. forever changed the way drinks were kept hot with his 1913 invention that combined the strength of steel with vacuum insulation. In the Master Series, Stanley ups the ante with 1-mm thick 18/8 stainless steel for the ultimate in rugged durability. This stainless steel alloy traps no flavors, so your beverage will always taste like its maker intended.