100% non-metallic, with protective toecap and midsole, Boston is comfortable and lightweight, it's developed with innovative comfort materials including TPU upper, a shock absorbing dual density EVA nitrile rubber outsole and Activ-Step® PU anti-fatigue comfort footbed. Features Durable and breathable whole TPU upper Moisture wicking breathable mesh fabric lining Shock absorbing dual density EVA nitrile rubber outsole Activ-Step® PU anti-fatigue comfort footbed Certifications EN ISO 20345:2011 S1P SRC We deliver ProMan Boston Safety Trainers PM4010 worldwide.We specialise in shipping almost anywhere in the world securely at competitive prices - across UK, US, Canada, Ireland, New Zealand, Europe - securely and fast at competitive prices