triseven premium nylon triathlon cycling shoes | lightweight, unisex & fiberglass sole (37, fluo) triseven the triseven shoe offers the technology you need to take on the world of triathlon . the reinforced nylon outsole provides excellent rigidity and is combined with the insole for ventilation system that channels air from the front all the way through the back of the shoe, keeping your feet cool . a wide strap and the loop heel lets you easily pull the shoes on for a fast and efficient transition, and the velcro strap that enhances support without pressure points and is reversed to facilitate closure while on the bike. a little loop for gripping rubber on leveling the crank in transition area. - cleats are compatible with spd-sl and spd, - weight 285g - synthetic upper with breathable mesh underlays - wide strap closure allow for a custom fit - heel pull loop for easy transitions - ventilated textile footbed - reflective elements 100% money back guarantee