The Burst classic round 56" diameter boat tube is covered with high-quality durable 420D nylon fabric over a heavy duty 24 gauge UV stabilized PVC inner bladder. Features four foam filled handles with EVA knuckle guards to prevent chafing, Quick Connect Tow System with triple reinforced stitching, two EVA foam elbow pads for extra comfort, a single rear boarding strap for easy mounting and recessed Boston Valve for fast inflation/deflation. 2 Rider Towable 340 lbs. (154 kg) max rider weight An explosion of fun on the boat wake. The Burst boat tube towable for 1-2 riders has a tapered design for better towing, easier loading, and a more comfortable riding position. 2