Contains a 3.5" x 3.5" (25g) bag of Quikclot Sport Silver. Stops moderate to severe bleeding until further medical help is available. Quikclot is a chemically inert material in a mesh bag that speeds coagulation of blood, resulting in a stable clot that stops bleeding. Sport Silver features an added antibacterial advantage of ionic silver. Silver acts to prevent the growth of bacteria and fungi which can be especially important if medical care is not immediately available.