The protective lining is made of 100% Dupont Kevlar and is 290 GSM. It is utilized in key zones that are highly susceptible to road rash. In our riding pants, the 100% Dupont Kevlar fiber lining covers from the thighs to shins on the front, and the whole seat area on the back of the pants. In Riding Shirts, the Kevlar covers from elbows to wrists, the shoulders, and the upper back. See individual product pages for clear graphics.