Some people like to create their own first-aid kits because they feel is will save them money or that they can piece together a more customized pack. However, a study completed by the NOLS Wilderness Medicine Institute, shows it’s quite a bit more economical to purchase a preassembled kit and refill it as you deplete your first aid supplies. We recommend investing in our of our preassembled first aid kits because they are stocked with trusted materials and organized intelligently, and they can be easily refilled when the time comes.