The Paddlesports Heavy Duty Inflatable River Tube, Purple/Pink, is a heavy-duty, rental grade quality, inflatable tube measuring 45". This tube is made of 30-gauge vinyl construction. This River Tube Inflated measures 45" Outside with a 20" Center Hole. It has an integrated cup holder and 2-heavy duty handles make floating down the river a breeze. The River Tube also has a built in 9" x 16" inflatable back rest that doubles as a safety chamber. This tube is easy to inflate with a large push valve. Product Details: 45" Outside (Inflated). Rental Quality. 30 Gauge Vinyl Construction. 20" Open Center Hole. Integrated Cup Holder. Heavy-duty Handles. Heavy-duty Construction. Built for Rental. 9" x 16" Inflatable Head/Back Rest as a Safety Chamber. Large Push Valve.