Whilst most velcro closure systems pull together two sides of the shoe's upper, the powestrap wraps around the foot, enabling ultimate comfort and fit using just two straps, replicating the volume control system.The instep and midfoot are separately adjustable areas providing a fully customised fit and compression. The R5 nylon composite outsole is supple and comfortable even on a long ride without compromising on pedalling efficiency. SpecificationsOutsole - Carbon reinforced nylonApproximate weight - 250g (size 42 1/2 pair)Size range - 36-48