Shoe Size Guide

We want to make it easier for you to pick the right shoe size. Just measure your child’s feet and choose the size in the table that matches their foot length. Room for growth and movement is already included.

How to read the table

Each size covers a range of foot lengths in millimetres, so you can choose how much growth room you want. Movement room is always built in. For example, a range of 104–109 mm is the growth room for that size. If your child’s foot measures near the top of the range (like 109 mm), there’s no growth room left in that size. It will still fit, but you may want to choose the next size up.

Barefoot shoes need less fitting room than regular shoes, and this chart already accounts for that. If you choose a size based on your child’s foot length, you can be confident barefoot shoes will fit correctly.

Size recommendations are always a guide. Every child’s feet are different, and growth spurts can happen quickly.

Foot Length (mm) EU Size UK Size
104–109 18 2.5 / 3
110–113 19 3.5
114–119 20 4 / 4.5
120–126 21 5
127–132 22 5.5 / 6
133–139 23 7
140–147 24 7.5
148–154 25 8 / 8.5
155–161 26 9
162–168 27 9.5 / 10
169–174 28 10.5
175–181 29 11
182–188 30 11.5 / 12
189–194 31 12.5 / 13
195–201 32 13.5
202–208 33 1 / 1.5
209–214 34 2 / 2.5
215–221 35 3
222–229 36 3.5 / 4
230–235 37 4.5 / 5
236–242 38 6
243–249 39 6.5
250–255 40 7


Shoe Size
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Pairs well with


Reima Barefoot Sandals – Rantaan (Black)

Lightweight, breathable barefoot sandals designed to support natural movement. The Reima Rantaan sandals feature a flexible sole and zero heel drop to encourage a natural stance and gait, making them a great option for active kids exploring outdoors.

Designed with a wide fit that leaves plenty of room for growing toes, these sandals allow little feet to move freely while still offering protection and grip for summer adventures.

Features

  • Lightweight barefoot sandal design
  • Wide last with extra room for toes
  • Flexible, thin sole for natural movement
  • Zero heel drop to support a natural stance
  • Breathable textile upper for warm-weather comfort
  • Hook-and-loop closure for easy on and off
  • Removable insoles with Happy Fit print to help find the correct size

Best For

  • Beach days and summer exploring
  • Natural terrain like sand, grass, and trails
  • Kids who prefer flexible, minimalist footwear

Performance

  • Flexible rubber outsole for good grip
  • Lightweight construction for easy movement
  • Designed for natural foot positioning

Sustainability

  • Contains recycled materials
  • Fluorocarbon-free

Materials

  • Upper: Textile
  • Lining: Textile
  • Sole: Synthetic

Care Instructions

  • Brush or wipe off dirt and dry at room temperature
  • Do not machine wash
  • Do not bleach, iron, tumble dry, or dry clean

Note: Barefoot shoes are ideal for natural terrain. For frequent running on hard surfaces like asphalt or concrete, shoes with more cushioning may be more comfortable.

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