.Contrast inside waistband with gripper tape to keep shirts in and pants in place . Zip fly with shank closure . Side waistband tool holders with hook and loop closure .Oxford double layered articulated knee with top loading kneepad opening . Main fabric--8.8 oz. (300 gsm), 60% cotton / 40% polyester canvas with double brushed back . Contrast fabric--600D 100% polyester oxford for abrasion resistance