From Sportsack:We have created the most versatile grip product ever, by combining ultra-absorbent, 100% cotton with our unique Absorbead Technology. Sportsack wicks moisture away, in any weather condition, while leaving no residue behind, providing a clean, natural grip. Sportsack gives you confidence in your grip so you can focus on dominating your competition, because winning isn't everything, it's the only thing!**Sportsacks have a break in period of 1-3 uses. The more you use it, the better it will work, guaranteed!