How it works

A kids' shoe with two sizes in one. Adjusted in 30 seconds.

This is how easy it is to adjust the shoe.

Turquoise, yellow and red colour markings on the side of the Sizeless shoe

How do I adjust it?

Adjusted in 30 seconds

  1. Pull the tabs on the side until the right size is set.
  2. Fix the tabs in place and pull the strap over the hook-and-loop fastener.
  3. Done. You adjust left and right separately.

Turquoise, yellow, red

On the side of the shoe you can see how it is set. Turquoise is the smallest setting, red the largest.

  • Turquoise
  • Yellow
  • Red
Smallest setting Largest setting

Our size finder also tells you which colour to set it to, for example: Size 25, on yellow.

When do I change the setting?

  1. Children don't notice when a shoe gets too small. That's why a quick check is worth it.
  2. Measure the feet about once a month. Ideally standing up, with the heel against the wall.
  3. If the foot has grown, simply move the shoe on by one colour. Left and right separately.
The flexible sole of the Sizeless shoe bends easily Wide toe box of the Sizeless shoe, seen from the front

Why is the shoe healthy?

Made for growing feet

Developed with physiotherapists and experts from the German Sport University Cologne.

  • Flexible sole

    Thin and bendy, for a natural walking feel. Children can feel the ground.

  • Wide toe box

    Extra room for the toes, so the foot muscles can move freely.

  • Zero drop

    Heel and toes sit at the same height, just like barefoot.

  • Light

    So light and comfy, you almost forget you're wearing shoes.

What experts say

Dr. Jan-Peter Goldmann on Sizeless.

“Poorly fitting shoes are a big problem with children's shoes. They can affect the way children walk and lead to misaligned feet. A size-adjustable shoe like Sizeless offers real benefits for healthy, growing children's feet.”
Dr. Jan-Peter Goldmann Dr. Jan-Peter GoldmannInstitute of Biomechanics and Orthopaedics, German Sport University Cologne
“From a physiotherapy point of view, barefoot is still the healthiest. But if shoes are needed, they should not get in the way of how growing feet learn coordination. This model puts the idea of minimal footwear into practice.”
Marija Leko Marija LekoPhysiotherapist for children and teenagers

What parents say

  • What I find especially practical is that the size can be adjusted individually, so the shoe grows along for longer. That way you don't have to keep buying new shoes as soon as the kids have grown a few centimetres.
    Lisa-MarieSizeless Galaxy
  • The afternoon we picked up the parcel from the parcel locker, my two girls didn't want to take them off again “until we have to go to bed”. They love the shoes. 💜💚
    Mum of two girlsMessage to us
  • The Sizeless shoe adapts perfectly to the foot. The size adjustment is great. […] The price is unbeatable.
    LauraSizeless Sprout
  • Matteo loves his shoes! “My shoes are as comfy as clouds.”
    VéroniqueMatteo's mum
  • My daughter loves her new shoes from you. She even refuses to wear sandals in the warm weather. A real hit.
    A mumMessage to us
  • Easy to adjust, and the wide opening makes them really easy to put on.
    TamaraSizeless Galaxy

Ready for the first step?

Pick a colour. Two sizes in one kids' shoe.

See the shoes

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