hides® Shorties H2O provides a shorter arm length (13 inches) than the regular H2O Retainer (22 inches). It is designed for people who prefer the superior hides® eyeglass strap for water sports but enjoy a shortened fit. Useful for water applications where the possibility exists of losing expensive eyewear in the water (such as surfing, fishing, playing in the surf at the beach & hanging out at the pool). The shortened length reduces the overall retainer weight, provides the ability to adjust the retainer for an extremely tight fit when the glasses are on, & keeps the glasses close to the body when lowered. The hides® H2O Shorties are designed to secure eyewear during extreme water sport, highly physical activities & areas that involve a risk of loss of your expensive eyewear in the water.