Workrite 535NX45 / 5354 fire resistant vest is made from 4.5 oz Nomex® IIIA. This unique and durable vest can be worn alone or with the Workrite bomber jacket. It protects against electric flash and flash fire which is always good when safety can be an issue in the workplace. The 535NX45 / 5354 vest/liner offers a knit collar, two welt pockets, an elastic waist in back, and a brass zipper (which is protected by fabric). Features of the Workrite 535NX45 / 5354 fire resistant insulated vest: HRC 3, EBT 37 calorie rated, NFPA 70e compliant Made of Nomex® IIIA fabric – blend of 93% Nomex®, 5% Kevlar® and 2% antistatic fiber, providing inherent fire resistance properties 2 welt pockets Fire resistant insulated vest made of 4.5 oz Nomex® IIIA outer shell, 9 oz Nomex® batt insulating fabrics Soft and comfortable knit collar Heavy duty brass zipper protected by fabric flap Model number: 5354BK for Black Small imperfection on front shown in picture