This high performance polyester system is one of a family of polymer systems developed by Northstar Polymers for specific demanding work environments. Urethane elastomers molded with this system exhibit fine resolution of mold details, good performance in wet environments and good resistance to ultraviolet light. This combination of features makes elastomers molded from MPS-A50A perfect for applications including patterns designed to transfer an image to wet surfaces including concrete and many custom applications.