Kid"s Tsukihoshi , Euro Machine washable synthetic leather and nylon mesh upper Anti-bacterial, removable insole is Green Tea Infused Ultra-Lightweight Extra toe Room for proper Splaying. Orthopedic and comfort function. Firm Heel Counters Easy On/Off closures. Flex Grooves for proper flexing Tsukihoshi has been producing shoes since 1873 and has been working with orthopedic doctors for over 25 years