Using the I.C.E. Retro Fit Kit is easy. First, make sure your concealable vest or plate carrier is clean and dry. Attach the kit to your body armor using the 'loop' fabric on the back of the panels and our SUPER GRIP 'hook tape'. Wear it just like you would your regular body armor. When using, remember that the evaporation and ventilation work best when you're moving and breathing normally. Avoid exposing the kit to sharp objects that could damage the panels. For maintenance, you can gently hand - wash the panels with mild soap and water. Let them air dry completely before reusing. And don't forget, the plate carriers and other body armor items in the product images are not part of the kit.