Your young tree is especially susceptible to bark splitting and scalding, which can attract insects and cause disease or sap loss. To safeguard your tree from these threats, Jobes TreeWrap reflects heat and acts as a barrier to insects and rodents. This patented material insulates while allowing the free exchange of air and water. Simply wrap the base of your tree in overlapping spirals. TreeWap will stretch as the tree grows providing long lasting protection. The roll is 4 in wide with 20 ft of material.