New Balance Men's MT20v2 Minimus Running Shoe Synthetic and mesh Vibram sole Odor resistant 4 mm drop from heel to toe An entirely different approach to trail running than the traditional running shoe, the New Balance Minimus 20 Trail v2 (WT20) takes the proven versatile durability of a Vibram outsole and combines it with a fitted, extremely minimalist upper that's comfortable with or without socks. This update to the Minimus 20 Trail features a modified upper on the same comfortable sole unit as its popular counterpart, creating a near-barefoot experience on the trail.