100% Square Weave Cotton Ripstop - 240 gsm. Back waist venting to maximise airflow and keep you cool. Mechanical stretch to give you more freedom of movement. 10 Multi-functional pockets so you have a place for everything. Mobile phone and ruler pocket. Reflective tape. Plastic D hoop for ID or key ring. Double layer hem for durability. Reinforced at all key stress points with bar tacks. Modern fit.