Offers instant relief from hot spots and blisters, the Adventure Medical Kits SAM Blist-O-Ban Assorted is a smart addition to any first aid kit. This innovative product consists of several layers of breathable plastic film, with a center area that is free to glide against the other layers. This acts like an artificial blister, taking the brunt of the rubbing and reducing friction on irritated areas. Blist-O-Ban is exceedingly valuable in a preventative role, keeping hot spots from turning into troublesome blisters.