WB-2 is FXD's mid height safety boot style with de-bossed microfibre collar, medial zip entry, lightweight composite safety toe and lightweight NITROLITE midsole cushioning. NITROLITE proprietary Phylon midsole cushioning material Slip, oil, and heat resistant 62 durometer rubber outsole High density 67 durometer green heel insert Poron midsole insert for additional heel cushioning Ventilated, antimicrobial PU footbed, sculpted for correct arch support Outsole side abrasion panel Lightweight composite safety toe Bump Cap with an extra 1.5mm TPU in the heavy wear area for increased durability Ballistic high abrasion resistant thread on all stitching Protective TPU heel kick panel YKK 10 coil zip angled for easy entry and smooth movement Coated microfibre collar with ventilation for support and breathability Nylon heel tab Coolmax engineered lining is moisture wicking and accelerates drying Moulded upper eyelets for once-only lacing Moulded TPU grip tab on tongue