“Turbo Charge Your Walk” According to Manufacturer, “Imagine a shoe so different it’ll change the way you feel about footwear-and exercise! Clinically-proven to help strengthen and tone the body, with the Exercise-Fit Collection by Earth, You’ll burn even more calories with every step.” Size:6 Evacuation holes let water flow through Wider footbed area allows toes to spread- relax Anatomically Arch Support reinforces and stabilizes the foot Kalso Negative Heel Technology, shifts weight back, helping to strengthen & tone Burn 4x more fat than ordinary shoes