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A seeming elementary job that is hard to do right and painlessly for children.

And it raises so many emotions! And questions!

Every visit in the shop or e-shop purchase should start with foot size, and I mean length and width. And forget about numbers 23, 24 EU, 8 UK and 7 US. Just measure.

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Small children don’t like the measuring, but I wouldn’t be excited either if some stranger, 30 years older than me, would grab my foot, take off my sock and start putting it to some unfamiliar machine.

That is why we start with a preventive bribe. In our shop corn puffs are cracking on the floor; wooden toys are rolling from one child to another and a little toy house is very busy. At that moment it’s manageable.

  • Measure your feet weighted down by your own weight, so standing up – the foot will splatter a little.
  • Check if the right foot is the same as the left one, the difference is quite common, and it is better to take it into consideration.
  • The barefoot size is important. Subtract 1-2 mm for thin socks.


You probably won’t buy it home for a few thousand but you can visit our shop in Písek and we will put you on it.

We have the necessary data about the length and width of both feet from it quickly and accurately enough to select shoes. Kids like the imprint it does. It works more for the fun than the arch diagnostic because the smallest ones don’t have the arch, plus we don’t have the ambitions to dabble in physiotherapist’s profession.  

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Plus 12, a TEMP worker for 1-2 hours per day.

Foot measuring device, that is on alert every day. It measures the inner size in the shoe. The real one, that can be used by foot. Little beak won’t allow the slide into the „dead angle“ of the shoe. The measurement such as skewer is, therefore, less precise, it will reach places where the foot has no chance to occupy the space. If you want to make your foot/shoe measurement easier at home, I recommend you to invest 350 CZK into the Plus 12 device. It is almost indestructible, and you can get the foot length and check the shoe space.


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My colleague Lenka has got the foot measuring device Plus 12 instead of one hand and instead of the other one, she has got Clevermess. We use the digital Clevermess for determining the space in the shoe to the width. We measure in the largest point of the shoe and, like the foot, it is not the widest at the ground, but a few mm above, Clevermess measures the space in the shoe slightly above the insole.


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For all three methods of measurement, it is essential how are they pushed. We try not to push the foot too much in Sidas, to position the heel properly, so that the foot measuring device is at the toe and at the heel, but trying not to push too much because we don’t want to spread the shoe by the foot. Clevermess tends to stretch some shoes wide, but we keep the shoe in normal shape while measuring.


We all measure a little differently and 2-3 mm are the deflection both in the variety of shoes (there is sometimes a bigger one, unfortunately, which is an endless struggle), but also in how the measuring device manages to fit into the shoe and who reads the figures/data. Try to measure your foot at home, and then let someone else do it. I assume you won’t work out the mm of the same number. For the uniformity, we have a specialist, Lenka, to whom we owe all table sizes and all the answered questions about the dimensions.


What is a chubby foot, a high instep and a narrow ankle? That is what we try to cover in the shoe description as well.

´Dominant toe´ is a foot with thumb longer than other fingers, that is being oppressed in the shoes with unanatomically shaped toe. The wide foot may as well be the same length but spread nicely into the fan, that’s why it also need the ideal space not to deconstruct.

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For totally soft shoes like the soft sole shoes and textile slippers, you can avoid the measuring and check the appropriateness of the size by touch. But check also space behind the heel, where the excess sometimes moves to, and check if the child is not bending the fingers.

Even if the dimension fits, see how the kid walks in their shoes. What about the heel, does it stay on? Don’t they chafe the instep?


Frequent home measuring assistant. Sufficient if you take into account that at the toebox the foot doesn’t make it to the very edge (if the shoe is designed so that there is little space above the seam). The insole tends to be narrower than the shoe space, there a skewer will help.

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The imprint is not a good idea for the measuring, because only the place of tread will appear but in fact, the foot is much bigger. The outline drawing can be much more accurate but keep the pencil right perpendicular. Or make you own homemade Sidas from a shoebox or a wooden box. Similar to how you measure a child’s height at the doorframe.


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Is illustrative, the shape does not exactly correspond to the interior shoe space.


It is individual. We need the child to walk naturally.

  • The shoe is small if there is no more than 3 mm of space. It is a space needed for a walk, for healthy and proper unwind of the foot over the fingers.
  • For new walkers we take shoes with excess as small as possible, a 5-6 mm.
  • The maximal recommended excess is 1,2 – 1,4 cm, for walkers who manage it well.
  • If you hesitate between the two sizes, don’t be afraid to order both and try them on.
  • If a kid grows out of his shoes too quickly, you will sell the shoes in the second-hand.
  • For differently sized legs, please check out if the longer foot has got the necessary 3 mm and at the same time, if the shorter one doesn’t have an excess, it all depends on age and walk competence. There is also a second-hand on Facebook page. 

Also, don’t forget your common sense and your head. Make your new shoes a joy, not a worry. 


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