This fitting gauge from Start-rite will give you peace of mind that you'll be choosing the correct size shoes. Simply position your child's foot on the gauge to get a reliable size reading. The M/L gauge is suitable for children 4 and up and measures sizes 9 junior upwards. The S/M gauge is suitable for ages 0-3 and measures 2 junior to 8.5 junior sizes. The S/M size gauge can be found here . !-- -- Please note: The Start-rite fitting gauges will provide you with accurate measurements in millimetres. These can quickly be converted into Start-rite shoe sizes with the help of our easy to use Start-rite size conversion chart found here . Measure and Fit at Home: Start-rite believe it's really important to measure a child's feet accurately before buying them every pair of shoes, as ill-fitting shoes can have a serious impact on your child's foot health. To be sure that your child is wearing shoes that fit properly, you can either visit one of the John Lewis stores, where trained staff will measure and fit your child with shoes, or if that's not convenient, use one of our specially developed fitting gauges to help you measure your child's feet at home. Click here to find out how to measure using the gauges and to watch step by step videos of how to fit your child's shoes. http://www.johnlewis.com/shop-by-brand/start-rite/the-importance-of-fitted-shoes/c700008535