Recommended Amount of Usage: Size Use 2in Childrens hands, fingers, and toes 3in Childrens wrists, ankles, and arms and legs 4in Childrens legs and ankles, adults hands and wrists 5in Adults arms and legs 6in Adults arms and legs Storage of Synthetic fiberglass casting tape: Be careful not to break the package. Store Maishijie Cast (Orthopedic fiberglass casting tape) at room temperature. Damaged products by careless handing cannot be replaced.Please handle and store them carefully. The shelf life of Maishijie Cast (Orthopedic fiberglass casting tape) is 3 years from the day of production.