micoach is all you need to get the results you want.
I bought a size 4 in these trainers, I'm usually a UK size 3 but size up for Adidas trainers and these fit like a dream. The sole is incredibly comfortable to run in and absorbs shock really well. There are air holes in the bottom of the sole allowing air to circulate and keep your feet cool. The shoe itself is very flexible too. I find myself wearing these even when I'm not running because the pattern is so nice!