The outer material that covers this canteen is a gray woolen, or satinette, cloth that has been hand sewn. The actual canteen is made of stainless steel with a spout. The spout has a rolled lip with a soldered seam. Attached by a steel link chain is a cork stopper to keep all the contents from spilling out. A cotton drilling strap is fed through three metal sling loops around the canteen in a way to keep it upright while carrying it. Overall Diameter: 6 Inches.