Jaybird & Mais 40 Economy Non-Elastic Athletic Tape is a blend of polyester and cotton fibers which makes an economical, but very strong high tensile strength athletic adhesive tape. The tape comes with a serrated edge cut as standard and is hand tearable (the product also tears lengthwise for additional versatility). Jaybird #40 comes coated with a 100% latex-free hypo-allergenic adhesive. The cloth is unbleached on the tape.
Please see Jaybird's Taping Techniques reference for the proper way to tape preventative and post-injury applications.