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.Let your feet enjoy the freedom of movement in the Vibram FiveFingers® Alitza Loop!Built specifically to promote a barefoot-like experience.Ideal minimalist shoe for fitness classes, barre, and studio sessions.Stretch polyamide upper.Upper envelopes the foot to help keep debris out.Individual toe pockets.2 mm EVA microfiber insole with Dri-Lex® antimicrobial technology for a great in-shoe environment.3.5 mm Vibram® TC-1 Performance rubber provides exceptional underfoot feel without compromising abrasion resistance.Serrated blade tread pattern delivers flexibility and reliable traction on wet surfaces.Imported.Measurements: Weight: 3 ozProduct measurements were taken using size 40 (US Women's 8), width B - Medium. Please note that measurements may vary by size.