Vibram FiveFingers Womens Alitza (Little Kid/Big Kid) Mesh^Polyester Imported FiveFingers are designed around the foot's measurement in inches. There is no real 100% translation between your US size and FiveFingers size. In order to find the right size, please measure both feet from heel to tip of longest toe with a ruler in inches. Take the longest measurement for your longest foot and refer to our women's size chart or men's size chart . Please click here for a video about how Vibram shoes should fit. Feet were made to run, skip, hop and play. Let your piggies feel true freedom in the Alitza from Vibram FiveFingers&reg;. Built to offer children the best barefoot-like experience. Ideal for casual play and wear. Fit Tips:1. Insert foot, slipping each toe into the individual toe pockets. It may work best to begin with the big toe.2. After each toe is in place, slip heel in and adjust until it is snuggly in place. Breathable polyester mesh upper. Coconut Active Carbon fabric and PU overlays heighten durability without sacrificing flexibility. Upper envelopes the foot to help keep debris out. Individual toe pockets. 2 mm, microfiber footbed with Dri-Lex&reg; antimicrobial te