Mach 2, 1-2 Rider Towable Tube for Boating. 1-2 rider tube for boating and watersports Kwik-Connect -'s patented Kwik-Connect for quick and easy rope connection Partially Covered - Heavy-duty partial nylon cover Speed Safety Valve - For fast and easy inflating and deflating Padded Handles - Non-slip cushioned handles providing comfort and stability.