Vibram FiveFingers footwear is 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 of your longest foot and refer to the Vibram FiveFingers men's or women's size chart to find your shoe size. Please click for a video about how Vibram shoes should fit. View the Vibram FiveFingers for your shoe size. View the Vibram FiveFingers for your shoe size. Stay steady on your feet both on and off the trail with the secure fit and grippy traction of the Vibram FiveFingers Trek Ascent hiking shoes! Built specifically to promote a barefoot-like experience. Ideal for off-road adventures and hiking in all conditions. Polyester and spandex upper. Upper envelopes the foot to help keep debris out. Speed lace system allows for quick-and-easy adjustments, and accommodates a wider foot or higher instep. 4 mm polyurethane insole with Dri-Lex sock liner featuring antimicrobial technology for a great in-shoe environment. 4 mm EVA midsole provides lightweight cushioning and shock absorption. 4 mm Vibram rubber outsole provides exceptional underfoot feel without compromising abrasion resistance. Imported. Weight of footwear is based on a single item, not a pair.