We recommend that you take accurate measurements of your child then order based on your measurements.
For products that have size measurements as well as ages, you should always order by size, because the age is only an approximation.
If you do not have a tape measure, download and print one of these, then cut out the parts and tape them together. Printer required. Full instructions are included.
These measuring guides for various products should help you measure correctly.
Click the guides to see and download larger versions if required.