3M Healthcare Scotchcast™ Plus Casting Tape is a lightweight, strong and durable casting tape that combines the benefits of a fiberglass casting tape with the handling ease of plaster. Scotchcast™ Plus casting tape consists of a knitted fiberglass fabric impregnated with polyurethane resin. Exposure to moisture or water initiates a chemical reaction which causes the tape to become rigid. Finished casts produced from Scotchcast™ Plus casting tape are lightweight, strong, radiolucent, and porous.