Most traditional golf grips, which are made with a mixture of cheap rubber, fillers, and synthetic materials, will harden or become slick over time with exposure to sweat, heat, UV, and ozone. Star Grips, which are 100% made in the USA, are made of a proprietary rubber compound that does not deteriorate in those conditions. Every grip comes with a 3-year warranty which guarantees that the grips will not harden, crack, split, or become slick during that time. This reliability will enhance the performance of your golf swing, whether it’s your 1st round or your 100th!