How to size up (kids) shoes?

Climbing shoes should be tight but sometimes they are just painful, and kids' feet grow. The easiest way to make the shoes a bit larger is to make a cut on the side in order to reduce the pressure of the often very bent forward heel cup. The shoe in the picture increased one full size due to the cut on the side.

Remember that brand new shoes will increase in size as you use them. Note also that cuts could destroy some types of shoes. It works best for kids that get pain in the heel.