ROX Ultralight Rim Tape is the world's lightest rim tape at only 1.5 grams per wheel. Made in the U.S.A. of reinforced nylon with an aggressive adhesive backing. Synthetic fibers are a better choice in areas exposed to water. Nylon will only absorb around 10% of its weight, whereas, cotton will absorb 25 times its weight. Meaning, your wheels will stay light and dry.