The Centurion Airpro bump cap is a new design for optimum head retention and is made from a breathable fabric to maximise airflow. · · · 50mm standard peak · · Approved to EN 812:1997+A1:2001 · · Available in packs of 20 · · Side pads: Polyethylene · · Ratchet pad: Ultra-sonically welded Polyester · · Ratchet: Polycarbonate, Polyamide, Acetal and Polypropylene components · · Weight: 153g (Standard)