Highly recommend U try the different versions on at an outdoor/sports store as the fit is different in each style. Also make sure sales person knows how to adjust the straps. Looser is better to start on strap adjustment. It's all one strap connected beneath the shoe platform. It will take a few wearings to allow your feet to adjust to the footbed as you wear them, & occasionally readjust toe strap to keep it comfortable. I found sizing to be same as my tennis shoe size in the unaweep, other style ran a tad small and had a higher arch.