Cooling pods are mini coolers that can be stuck on with removeable Velcro to the inside of helmets, xc vests, shirt collars, chin straps, watch straps, etc. Simply place the piece of easily removeable Velcro to the location you want to use the pod, then soak the pod for ten to fifteen minutes as you would with a neck cooler and attach to your previously placed Velcro. Many color options and three sizes available; long (nice for a front to back top of your head helmet cooler, collar, or down back of shirt or vest) , medium (great size for helmets, collars, wrist bands), or short (chin strap, base of neck, wrist)