lucktao children 2 pairs orthotic insole flatfoot corrector arch pain support gel inserts pads (l size :9.5cm (3-5 years)) lucktao 100% brand new and high quality! perfect for all sports and everyday wear, this insole will provide you with comfort as you walk, run and play. arch support for flat feet is important to prevent injury and reduce stress as well as reducing foot pain. high quality material, it is soft and comfortable. they are also a corrective tool for splayed feet.