Specified Size fits. Turns out neither smaller nor larger. The boots looked while running initially a little stiff. But that's a matter of getting used to. After a day in the garden, I was convinced of these boots and have now done my old (DIY) in the trash. The boots are very light but stable. Due to the high shaft and the ankle is very well supported and protected. Very good insole (not aching feet more in the evening). Despite thick socks in the summer I did not get sweaty feet. After two weeks of continuous use in horticulture and when felling trees have my boots more than once the toes and the tapes (they are waterproof) gerrettet. These boots to lace tightly and reopen requires some effort. For convenience, I would have used for the upper eyelets these hook-clamp eyelets. But perhaps these eyelets are not allowed in safety footwear.