








adidas Originals ZX 1K Boost Junior Core Black Trainers
Selected size
3.5 UK / 36 EU
Size Finder™
Have a printer?
Download the simple and free to use Size Finder™ Paper Ruler and follow the instructions included with it to measure either your own or your child's foot length from the comfort of your own home.
Download the paper rulerDon't forget to check your printer settings are marked as "Do not Scale" – otherwise the ruler won't give the right length.
Don't have a printer?
To measure either your own or your child's foot length from the comfort of your own home all you need is a wall and a ruler.
Follow the steps below for each foot and take the largest centimeter size:
- Place the foot on a wooden or hard floor, with the heel touching a wall.
- Stand normally, with equal weight on both feet.
- Place a ruler beside the foot so it is also touching the wall.
- Then take the length in centimeters from the heel to the tip of the longest toe – the longest toe may not be the big toe.
There is no need to add any extra centimeters as we've already calculated growing room into all our measurements.
Step into innovation with the adidas Originals ZX 1K Boost Core Black trainers. Crafted for comfort, their mesh and synthetic suede uppers offer a modern flair. The Boost and EVA midsole delivers cushioning that’s perfect for any adventure, while the OrthoLite® sockliner ensures a stable, comfortable fit for every step.
- Lace closure
- Mesh and synthetic suede upper
- Stable feel
- OrthoLite® sockliner
- Boost and EVA midsole
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