FXD WB.4 NITROLITE SLIP ON WORK BOOTS ARE HIGH PERFORMANCE DOUBLE BOUND ELASTIC SIDED WORK BOOTS FEATURING OUR NITROLITE MIDSOLE TECHNOLOGY FOR ALL DAY COMFORT.THE WB.4 SLIP ON IS AUSTRALIA AND NEW ZEALAND SAFETY STANDARD COMPLIANT AND THE BONDING AND COMPOSITE TOE HAVE BEEN TESTED AND CERTIFIED BY BENCHMARK PRODUCT CERTIFICATION. Upper material: Nubuck, Microfiber, TPU NITROLITE Proprietary Phylon midsole cushioning material Slip, oil, heat resistant 62 durometer rubber outsole AS 2210.3:2019 Personal Protective Equipment Safety Footwear Reinforced double bound elastic gusset. High density 67 durometer green heel insert for increased durability Poron midsole insert for additional heel cushioning Ventilated, antimicrobial PU footbed, sculpted for correct arch support Lightweight composite safety toe Abrasion resistant ballistic thread on all stitching Protective TPU heel kick panel Nylon heel tab Padded Achilles support insert Coolmax engineered lining is moisture wicking and accelerates drying