Ecogrip has been certified by CSIRO (Commonwealth Scientific and Industrial Research Organization) as fully biodegradable. The Grips will decompose within a year after use. All other Overgrips are madeout of Polyurethane (PU) and take several decades to decompose. We believe that all sporting brands should be taking more responsibility for how their products are disposed of, and Ecogrip is one product leading the way. We offer 3 different types of ecogrip: Hi-Tac, Smooth and Pro. Don't you think it is time you made the change to a more environmentally friendly grip?