FXD Workwear Slip-on Nitrolite Workboots (WB4W)FXD WOMENS WB. 4W SLIP ON NITROLITE WORK BOOTS ARE HIGH PERFORMANCE WORK BOOTS ENGINEERED WITH A WOMENS SPECIFIC ANATOMICAL FIT AND A NITROLITE MIDSOLE FOR ALL DAY COMFORT. THE FXD WOMENS WB. 4W SLIP ON NITROLITE WORK BOOT FEATURES A HYBRID TECHNOLOGY THAT USES SPORT TECH AND SAFETY TECH TO PROVIDE THE MOST COMFORTABLE WOMENS WORK BOOT ON THE MARKET. THE NITROLITE MID SOLE PROVIDES ANTI FATIGUE ENERGY REBOUND AND HEEL STRIKE DISPERSION FOR WOMEN WHO