As seen in Women's Health and Fitness Magazine, October 2005. The RYKÄ Tri-Trainer is lightweight balanced running shoe that offers unique features for the runner who combines multiple outdoor training activities. Synthetic/mesh upper provides light weight, breathability and quick dry. Heel strap/buckle closure system adds adjustability and snug heel fit. Full forefoot Nitracel Engage® offers superior cushioning and rebound. Unique water-friendly outsole delivers durability, water drainage and enhanced drying. Wt. 8.6 oz.