New Balance Women's WR00 Minimus Running Shoe 100% Textile/Synthetic Imported Synthetic sole Natural running-inspired athletic shoe featuring 0mm heel-to-toe drop and seamless, breathable mesh upper Padded tongue and collar ACTEVA midsole foam Built on an NL-0 last. This last type has a wide toe box width and a reduced toe box depth, a low instep height, and a standard heel width.