GATOR EDGE RIGID AND FLEX are made with 100% Polypropylene Co-Polymer. This will give it great strength as well as provide great flexibility. We have a Rigid model which is ideal for straight applications and a Flex model that can be used for all curved applications such as walkways, paths, entrances etc. Both the Rigid and Flex can be locked together with the ?Twist & Lock? system. Finally the Rigid could be transformed into a partial Flex by cutting the bridge support between each triangular angle.