Rothco Engraved Stainless Steel Flasks. Officially Licensed by the United States Marine Corps. Specifications for Rothco Engraved Stainless Steel Flasks: Manufacturer: Rothco Color: Steel/Marines Fabric/Material: Stainless Steel Cotton Canvas Brass Features of Rothco Engraved Stainless Steel Flasks Material: Stainless Steel Material Specs: Cotton Canvas/ Brass Hardware Package Contents: Rothco Engraved Stainless Steel Flasks Rothco Engraved Stainless Steel Flasks 631-Marines