You can buy shoes without trying on, but for this you need to do some preparatory work.

1. The European sizes of almost all Italian manufacturers of outdoor shoes are the same. That is, the boot size of the AKU will correspond to the boot size of the SCARPA. THE SIZE! But the completeness, that is, the width may be different. As practice shows, the ASOLO shoe is quite narrow.
2. At the German manufacturers of outdoor shoes all the same. But, the Germans are distinguished by a wide block. Moreover, HANWAG makes shoes with increased thumb space!
3. Americans have three gradations of width (fullness).
4. Ukrainian and Russian manufacturers are pure lottery.
5. Winter shoes are worth buying half the size of the larger. Because: liner-sock-fingers move. Otherwise, sadness and cold.
6. The size on the label is indicated in three main types:
- European EUR. From 35 to 49, with halves. Moreover, there are only halves: 37.5 / 39.5 / 41.5 / 42.5 / 44.5 / 46.5 / 47.5 / 48.5.
- English UK. From 3 to 14, with halves. Halves are everywhere.
- American USA. from 3.5 to 14.5 with halves that are everywhere. AMERICAN SIZE ALWAYS ON THE SIZE FLOOR MORE THAN ENGLISH.Still, sometimes, indicate the size in cm, the so-called mondopoint and American female USA LADY (USAL)
 


Now about the technology of size selection

Measure the insole, thankless task. If you do not have a size chart. We must go from analogies. The shoes you buy aren't the first one you have? You are not barefoot at the time of purchase. So take your old, comfortable shoes and look at the tag. If this is a well-known manufacturer, then the size of your old shoes will in most cases correspond to the size of your new shoes. You have an old SCARPA, and if you want to buy a new AKU or LaSportiva, then the sizes will also not differ.
Look even in the shoe cabinet, maybe there is another manufacturer. Open the manufacturer’s website and look for the size chart there. Everyone, practically shoe makers, has them. SHOES! These are those who make shoes, and not those who order shoes.
MONDEOX factory in Italy, she produces shoes, and BERETTA orders shoes from him. Just as AKU produces shoes, L.L.BEAN orders shoes from them.
DANNER has on its site a cool sizing check note. You just print two A4 sheets, compare them in a certain place, get up with your foot and voila.
A replica of measuring the foot. How to measure? You take two volumes of TSB, put them: one parallel to the heel, the other to the fingers, load the leg, move the volume until it is snug against the foot, remove the leg, measure the distance between the volumes. The foot at rest and the foot under load have different sizes.
And finally. Better to make a little mistake in plus than in minus. The gender of the size is more regulated by the insole, second toe (liner) and lacing. Smaller size — only with an ax (kidding).

P.S.

UK 11 - for those who have 45 for sure.
UK 10.5 - for those who like 44-45.
UK 8 - for those with 42 for sure.
UK 9 - for those who have 43 for sure.
UK 5 - for those with 37-38.
UK 5.5 - for those who have 38 for sure.
UK 6 - for those with 39.