EasyFlex 1131-3C 3 Count Tree Trunk Protectors, Grey Flexible coil that is designed to protect trees from damaging string trimmers, other yard equipment and small pests Coiled design (unlike many flat tree protectors) holds its shape in all weather conditions Slotted design provides airflow to help prevent bark rot Unique expansion tabs allow additional coils to be added for trees larger than 4 In. diameter Manufactured in a greyish brown color that blends with most tree bark surfaces