Pro Series 3-Rider: Enhanced Pro Thriller 3 seats 1-3 riders up to 510 lbs with upgraded materials and construction. Low-Drag Design: Hydrodynamic tube shape minimizes water resistance for fuel-efficient towing behind the boat. Easy-Connect Tow: EZ tow connector system allows fast, secure attachment to tow rope without additional hardware. Nylon Cover: Heavy-duty nylon cover protects the inner bladder and provides a comfortable riding surface. 2-Year Warranty: Backed by a 2-year manufacturer warranty. WOW Sports customer support is available for product questions.