Thule's GateMate is made from heavy-duty vinyl with foam padding that protects both your bike and your truck's tailgate. Integrated Knock-Blocks prevent your bikes from sliding off the edge of the tailgate and causing damage to your vehicle and/or bike. Nylon straps keep the pad securely attached to your tailgate and anchors provide secure tie-down points for your bikes and other loads. And, you don't have to remove the pad to get to the tailgate's handle thanks to the convenient Handle Hood. The Small size is 54 inches for compact trucks, the Large is 62 inches for full-size trucks.