Easily adjust the fit of your boots with the Code Red Zipper Accessory. This accessory is offered for personal preference and custom fit. NFPA rated, the Code Red Zipper Accessory is compatible with both the men's and women's Rocky Code Red Rescue NFPA Rated Composite Toe Fire Boots (RKD0086 and RKD0091). Instructions on how to lace-in the zipper attachment are included. You can also watch our step-by-step instructional video! Rocky Code Red Boot Lace In Zipper Accessory