Layer 3 - The holding layer: The cotton or padding layer is usually held in place with polo or vet wraps, or sometimes a layer of gauze is placed over the cotton and then vet wrap is placed over the gauze. Like the cotton, these should also be placed snugly and smoothly around a leg. Vet wrap can be placed too tightly on the limb. To ensure that this does not happen, use plenty of cotton padding and pull the vet wrap just tight enough to remove the wrinkles. Only place the vet wrap over areas that have been previously covered with the cotton. Placing vet wrap directly on the skin can cause tissue damage if it constricts the blood flow. After the vet wrap is applied, at least one or two fingers should be able to be placed under the bandage. If vet wrap has been used, it is helpful to place tape around the wrap to keep it from unraveling. It is also helpful to place some Elastakon on the top and bottom of a bandage on the leg. This helps to keep the bandage in place and will prevent dirt and debris from working under the bandage.