High-Quality Materials: ABS high-quality materials workmanship, polished smooth without burrs. It does not harm the baby's skin and can be reused. Simple tool, easy to store as memoirs and souvenirs. Three-Dimensional Scale: The scale bar is three-dimensionally suspended, with a centimeter scale on one side and a shoe size ruler on one side, which is clear and records the baby's growth process. Easy To Use: The heightened heel guard could fixes the position of the baby’s heel, making it easy to measure the length. Put the baby's feet in the device and slide the pointer skateboard to get the accurate size. Applicable Age: Suitable for most children, the adjustment range of the foot measuring device is 6 - 20 cm. Noting: the measurement size is centimetre. The foot gauge will ensure that you will never buy the wrong size shoes for your child.