8561 - Blundstone Unisex RotoFlex Black Leather 150mm Zip Side Safety Boot Biomechanically engineered for all-day comfort and safety, the black #8561 features Blundstone’s new Fortalite composite toe cap for lightweight and long-lasting protection. Black water-resistant nubuck leather upper safety boot - 150mm height. 6 eyelet lace up with unique metal free, friction resistant lace rings. Laces are manufactured from recycled PET. Durable, heavy duty zip with industrial grade zip fastener. New lining made from recycled PET offers moisture wicking and long-lasting performance. Streamlined TPU toe guard for added leather protection. INFINERGY®: E-TPU, a super elastic energy foam that is soft but resilient, providing enhanced cushioning and reducing the impact of every step. GRIPTEK HD®: biomechanically designed TPU outsole designed for optimum grip and stability: abrasion resistant and heat resistant to 140˚C oil, acid and organic fat resistant highly resistant to hydrolysis and microbial attack FORTALITE®: broad fitting compression-resistant composite toe cap provides safety without the weight. Tested to resist a 200 joule impact. AIRCELL®: uniquely constructed zoned airflow footbed is designed with specialised breathing channels to activate ventilation, moisture control and provide full-body cushioned comfort. The footbed is anti-bacterial, washable and breathable. SOFTCELL®: the overarching comfort system utilising a combination of specialist materials and the unique biomechanical foot-cradling design to increase stability, balance, comfort and manoeuvrability. Designed to reduce the risk of trip, slips and falls. Blundstone 8561 Unisex RotoFlex Black Zip Side Safety Boot