A new footwear specific PU system for low density, high hardness unit soles for light casual and leisure shoes has been introduced by Huntsman Polyurethanes. Suprasec 2904 is said to provide a 20 per cent improvement in flex performance against standard products. Its new formulation provides easy and fast demoulding on all commonly used casting machines. It has high flex performance, abrasion and slip resistance as well as good surface definition. The finished soles have a soft feel and can be easily painted.