Professional Carrying Tube - This sturdy tube has a hard plastic core, wrapped in water proof black fabric. The fabric is double stitched at the ends and around the handles/shoulder straps; for extra durability. One end zips opened and closed for easy access to your artwork. Two diameters available: 4-1/2 inch inner diameter and 3-1/2 inch inner diameter. Each diameter tube is available in two lengths: 36 inch and 24 inch. Includes an adjustable shoulder strap that can be removed. The handle is made out of suede.