Roof cap is made from 600 denier Polyester and fastens to roll bar of the mule with supplied adhesive backed Velcro and "T" wrap system that uses rubberized webbing to grip roll bar firmly. This wrap system virtually eliminates slippage and eliminates the need for removal when trailering unless speeds are in excess of 65 mph. Perfect to keep you in the shade and out of the rain. MADE IN USA AND FEATURE OUR 1 YEAR WARRANTY.