When seconds count there isnt a better shoe to get you thru the transition quickly & offer the maximum in performance on the road. Designed for elite-level competition the S-Works Trivent is the most highly engineered triathlon shoe in the world featuring a revolutionary new Boa® dial closure system designed to minimise transition time temperature-regulating construction & Body Geometry ergonomics.> Revolutionary Tri Specific Drawbridge closure for the fastest possible time in both transitions FACT 12.0 carbon sole uses high modulus unidirectional carbon fibre & Torsion Box construction to optimise stiffness & weight Lightweight Boa® L4 closure system Replaceable high-strength braided steel lace Arch mounted Launch Clip for flying starts Smooth internal lining for "sockless" riding fit & comfort> Open tongue design for breathability & drying with toe Velcro closure Replaceable heel lugs with internally recessed bolts for safety Light tough & water-resistant Micromatrix upper for supple comfort 3-bolt cleat pattern fits Shimano SPD-SL Look Time & Speedplay