The ‘Goofy Foot Sidewalk Surfer’ from NASH, shown here, was one of the original, mass produced skateboards of the late 1960s. This was sold in toy stores and marketed to kids as a toy. The plastic wheels and metal ball bearings made riding dangerous and only the skilled rider could perform tricks or rode downhill with any success. It wasn't until 1970 with the introduction of the urethane wheel by Frank Nasworthy, that skateboarding became a legitimate competition sport. The urethane wheel provided a smooth ride and enabled skaters to go faster and maneuver the skateboard in ways they couldn’t with the cumbersome metal, clay or plastic wheel.