Features Hard shells with metal inserts on knees Leather stretch on buttocks, knees Elastic comfort inserts on groin, the knee hollow & calves Connection zipper Velcro for knee sliders Calf width adjustment Safety SAS-TEC protectors (hips, knees) Safety seams (ISO 4916) Doubled material on the buttocks Material Robust 1, 2 mm to 1, 4 mm thick cow leather Elastic polyamide fabric Breathable mesh lining with elastic inserts