DetailsThis item is only available to ship within the contiguous 48 U.S. states.VJ Sport Size Chart The iRock 3 is made for technical trails and obstacle course racing. It has the grip and control you need for the gnarliest of terrain. VJ Sport's most aggressive, deep lugs give you the best grip in the worst conditions. This lower profile shoe gives you exceptional feel for the terrain. The upper is made of breathable sandwich mesh reinforced with strong kevlar fibers. It is built on a narrow last for a snug fit. The iRock 3 is superb for obstacle course racing, SwimRun, Sky Running, VK’s, and trail running.