Empty Blood Bags are small plastic packets that can be filled with blood and sealed. These packets can be adhered to the actor/actress desired wound area and either broken or exploded with a squib. (We do not sell squibs, and please note that if you find a source, you'll need a Pyrotechnic's License to buy them.) Each packet will hold approximately 2 teaspoons of blood. Size: 1" x 1" ziplock 20 bags per order.