EZ Fold-up Made From High Impact polypropylene 8 Anti-Skid Pads for Stability Avigo Extreme series puts you first for excitement and fun. Constructed with Polypropylene Plastic for super durability. It features raised chevrons to help guide you down the middle every time as well as 8 anti-skid pads underneath for traction and support. The coolest part is that it is EZ fold up and put together with wing nuts that require no tools. How cool is that? Another quality product by Stoneridge Cycle.