FXD WB-2 Nitrolite Mid Cut Work BootFXD WB 2 Zip Sided Mid Height Safety Boot The FXD WB 2 Composite Zip Sided Safety Boot is designed for workers who require reliable protection and comfort on the job. With a 4. 5 inch height and a composite material construction, these boots offer lightweight durability and breathability. The steel toe cap and slip resistant sole make the FXD WB 2 an ideal choice for workers in hazardous environments. Features: NITROLITE midsole cushioning NITROLITE