This purchase I have no regrets, neither in size nor in its function. I have a shoe size that varies betw 39 and 40. Therefore, the purchase was just right in size 40.5. I can easily slip into the shoe without help and still have space for socks but you do not really need. Excellent. Comfortable you can not run in the winter. The feet do not sweat and have space. The boots are lightweight and super in their free processing and make a snow hike to experience. No white edges of road salt or the like just ... feeding fluff a little undress. Thumbs up when buying.