Kid"s Tsukihoshi, Manta boy"s casual Sneakers Machine washable synthetic leather and nylon mesh upper Bungie cord and hook and loop closures for a custom fit Anti-bacterial, removable insole is Green Tea Infused Extra toe Room for proper Splaying. Orthopedic and comfort function. Firm Heel Counters Flex Grooves for proper flexing Tsukihoshi has been producing shoes since 1873 and has been working with orthopedic doctors for over 25 years