Tube Pro Inc, TP33-LINCOLN BLUE, Model: TP33-Polo-Blue, Item: Inner Tube Waterpolo Tubes; Blue, Features: Increased Mobility (no handles), Double Welded Smooth Inner Seams, Single Main Air Chamber with Small Push Valve, Material: Heavy-Duty 30 Gauge PVC Vinyl, Deflated Outer Diameter: 37", Inflated Outer Diameter: 33". Inner Diameter: 16", Includes: Repair Patches & Urethane Glue Tube