Designed to optimize power and quicken transitions times, the Shimano SH-TR5 Triathlon Shoes make every second count. The fiberglass-reinforced nylon sole is compatible with SPD and SPD-L cleats and improves power transfer to the pedals. Shimano Dynalast promotes a smoother, more energy-efficient upstroke and is reinforced with synthetic leather and 3D mesh upper for strength and ventilation. Adaptable cup insole conforms to the foot shape for a personalized fit. T1-Quick Strap keeps the shoe open for fast step-in during transitions and asymmetrical heel loop makes it easy to secure the fit.