The shoe is adjusted using two straps on the outside. These pull the flexible sole up or release it down. This targeted adjustment of the toe box makes the shoe as a whole larger or smaller, both externally and internally. Parents can thus create more or less space in the shoe and individually adjust the appropriate shoe size.

The shoe grows with the child by over 8mm. This is equivalent to slightly more than one additional shoe size. The idea is that the Sizeless shoe accompanies a child from spring to autumn, always fitting perfectly.

Our shoe is primarily adjustable in length, which is where children's feet grow the most. We know, of course, that feet also grow in width. However, studies show that this growth in width is significantly less pronounced compared to length. Thanks to our naturally wide toe box, the flexible upper material, and the size adjustment that includes the entire toe box, there remains sufficient space even as the foot grows. Children with high or low insteps can also individually adjust the shoe using the velcro fastener on top.

Yes. Sizeless was developed in collaboration with experts and offers a flexible sole and a wide toe box – both important for the healthy development of growing children's feet. From a biomechanical perspective, the shoe is explicitly recommended for children.

The flexible sole supports the natural rolling motion, and the wide toe box gives the toes enough room to spread. Poorly fitting shoes (too large or too small) can impair the gait and lead to foot deformities – a continuously size-adjustable shoe helps to avoid this.

Our shoes are available from size 24. Depending on the child, this corresponds to the age at which the first proper shoes are needed. Generally speaking, especially in the first few years, walking barefoot is the healthiest option for foot development from a physiotherapeutic perspective. However, if your child needs shoes, Sizeless is a good choice because the shoe can be flexibly adjusted.

Your shoes are in stock and will be shipped on the same day you order (for orders placed by 7 PM). With DHL, they will arrive at your home 3–5 business days later.

Yes. You can return the shoes within 30 days of receipt if they are unworn, unused, with tags, and in their original packaging. Please contact us in advance at team@sizeless-shoe.com so we can initiate the return. Unfortunately, we cannot accept returns without prior request. If the shoes were damaged, defective, or incorrectly delivered, we will cover the return shipping costs. For returns or exchanges for other reasons, such as size or color, you will bear the return shipping costs yourself. Our tip: Carefully measure your child's feet before ordering and compare them with our shoe measurements to ensure the best possible fit.

We accept all common payment methods. The available payment methods will be displayed to you at checkout.

You can easily clean the shoes with a damp cloth. For more stubborn dirt, a little mild soap will help. Please avoid aggressive detergents, bleach, or hot machine washing to preserve the material and shape for a long time. Afterward, let the shoes air dry, but not directly on a heater or in direct sunlight.

With every pair of Sizeless shoes, you save about one pair of shoes compared to conventional children's shoes. This is because Sizeless can be worn longer thanks to its adjustable sizing. This means fewer shoes are needed overall. This saves material, reduces waste, and makes family life more sustainable and affordable.