Shoe fits loosely in 43/44 (my size = 43), does not sit too tightly, rather comfortable. The only downside is this: if you purely slips with thick socks, the foot comes quickly sweat ... but by being able to wash off the boot without any problem, this is not really bad ... (summer test not yet performed) Holds non-slip sole, what it promises. Quality = good overall. The shoe is very useful and recommendable for caring professions ...