The Spiro is built with all of the features you would expect from a Cat work boot. Featuring ERGO; a series of design principles that work together to deliver footwear that promotes foot health by integrating stability, flexibility and comfort. - Conforms to EN ISO20345:2011 Safety Footwear Standards - Strobel and Cement construction - Removable Nylex and PU Insole - T870 Rubber Outsole - Penetration resistant poured PU midsole construction - Impact and compression resistant toe cap - Anti-static and energy absorbing heel - Water resistant upper - High heat resistance of 300C - Slip resistance SRC - Resistance against slipping on both ceramic and steel surfaces covered with water and cleaning products.