The Rome 390 Boss has been completly redesigned with a new highback, new Full Wrap platform & the Pure Flex ankle straps that holds your boots in place but allows for tweaking. The Pure Flex ankle straps are built with the maximum coring to make them super lightweight & minimally styled for medium flex. It shapes around your boots & holds them in without creating pressure points. The Full Wrap chassis has a adjustable baseplate created to help fit a wider range of boot models & sizes. With simple adjustments you can change the size of the binding to fit your boots perfectly. The Full Wrap is designed to deliver pure power & maximum energy transfer to the board. SIZE GUIDE: S S S S S S/ML S/ML ML ML ML ML ML/LXL ML/LXL LXL LXL LXL LXL LXL UK MEN 4 4.6 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 13 US MEN 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 14 US WOMEN 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15.5 EU 36.5 37 38 38.5 39 40 40.5 41 42 42.5 43 44 44.5 45 45.5 46 47 48.5 CM 23 23.5 24 24.5 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 30.5 31 32