The holy grail of knee highs - walkable heel + they are slim fitting through the calf. I can't tell you how much I detest flappy knee high boots... you know the ones, that are all wellie-like around the top.
If you have slim calves then these are for you... they will fit like a glove. If you're big of calf then these will be too slim for you.
They're a 39.5 but, given you'll likely be wearing a sock with these, they're best suited to UK6/ EU39.
Made in Italy
In fantastic vintage condition.