Lightweight 4-way stretch fabric. Shaped waistband for improved comfort. Broad center back belt loop for extra stability and strength. Gusset in crotch for freedom of movement. Plastic covered metal buttons. Thigh pocket with fastener closure and several compartments. ID card loop. Opening for ruler. Articulated knees for optimal mobility. Ventilation opening at side seam. Adjustable bottom leg with snap buttons. Possibility to increase leg length by 5cm. Reflective details.