Phenolic sidewalls are naturally waterproof and, unlike UHMW and ABS, bond great. No additional treatment (i.e. flame treatment) is needed to bond. Works well with thick wood glues and all epoxies. Reinforced phenolic has a high modulus, adding to the torsional stiffness of your ski or board. Made of 100% post-consumer recycled paper and petroleum free resins from industrial by-products. This sidewall material is FSC and Rainforest Aliance certified. Each strip is .5" thick and .4" wide. Available by the piece.