The B904 features fabric and reflective tape that meets the requirements of EN ISO 20471. The innovative quick release anti-entanglement system is designed as a protection device when working in hazardous conditions. Features include a secure weatherproof MP3/CD and mobile phone outlet as well as padded straps and back panel for wearer comfort. Phone pocket. Padded double straps. Reflective tape. Padded back panel . Quick release buckle .