Abstract: A knee protective sock is disclosed which is particularly designed and useful in skateboarding wherein the sock comprises distinct but integrally knitted foot and calf portion, below knee portion and knee portion. The below knee portion is of a tight strong weave so as to grip the leg, while the knee portion is of thicker, heavier knit than the other portions. All the portions are integrally knitted so as to provide in effect a single continuous one-piece sock. The sock combines the wear, comfort and protective characteristics necessary to a skateboarder readily subject to falling from the skateboard. Further the specific gripping portions of the sock prevent the sock from slipping during skateboard activity.