BOXES ARE IN MEN'S SIZES! Not sure why Adidas did that, but all the marked sizes are mens. I've converted them to women's sizes in this listing. 5.5 womens = box size 4 mens 6 womens = box size 4.5 mens 10.5 womens = box size 9 mens 11 womens = box size 9.5 mens I have read online that these often fit about 1/2 size large. You may want to size down from your regular size! From adidas: Lightweight build and sleek profile, ideal for city exploration. The retro nylon upper has soft suede accents. Underneath, an EVA midsole cushions every step and a ripple outsole keeps you grounded. Product color: Green / Core White / Collegiate Green Product code: JH8643