WOW Sports Super Bubba Pro Series Towable Tube for Boating is made with heavier 1680D Nylon and 40-Gauge PVC. With rental and heavy usage in mind, this tube has a flat base for a smooth ride and minimal drag on the boat. The secure deck seating on the BUBBA towable tube comes with a super-high backrest with sidewalls which is great for keeping the riders safe. This tube is designed for 1- 3 riders.This tube for boating features a double reinforced towing system, and EVA foam seats and knee pads for that extra comfort while riding on the waves. It has 12 double-webbing foam handles and 6 flat handles. We want you to spend most of your time riding on the waves rather than inflating and deflating the towable tube. This boat tube has a speed valve for faster inflation and deflation.