UPPER-Breathable and moisture transferring mesh; the upper helps keep feet healthy, cool and dry; used durable & soft PU synthetic leather.Unrestrictive collar that allows free ankle movement ; solid heel hold so your heel does not lift up and down.Used polyester cloth lining and foam to add comfort around the ankle as well as the tongue.The out-sole is made of a non-marking Rubber compound and is both flexible and durable.