Bradley 4 Heavy Duty 57" River Tube Covers (Compatible with Intex River Run I, Bestway Rapid Rider Tube) River Tube Cover for 53" Inflatable Sport Tubes. Cover Only - Tube Sold Separately. Compatible with Intex River Run I Item numbers: 56825 58825 58828 58835, Bestway Rapid Rider Tube 12604, Ozark Trail Rapid Rider, Costco 53" River Tubes and More! Saves the life of your river float tube. River outfitters combine this item with Intex river tubes to create the best river tubes available! Allows for use of Quick Connect rope-clip systems to link your Intex tube together. Heavy Duty Construction made for river outfitters. 57" diameter cover allows for 100% full inflation of river tube you put inside, even after initial exposure to sun. SPECS: 1000 denier Micro Mesh bottom lets water pass through while providing superior protection against abrasion by rocks, tree branches, and other debris. 1100 denier vinyl coated canvas top. Total inflated diameter: Approx 50". Be sure to fully inflate river tube inside cover until both are firm and all excess slack is eliminated.