Some race-oriented shoes compromise on durability, but the MTL Adapt Matryx is built to withstand long distances, both in training and in ultra-distance events. When the mileage adds up in rugged terrain, the feet take a beatingthe Adapt Matryx, developed by the Merrell Test Lab (MTL), meets the challenge with a generous amount of FloatPro+ cushioning foam. The sidewalls of the sole feature firmer materials to enhance lateral stability. - Standard fit - 6 mm drop - 4 mm tread depth - Vibram MegaGrip outsole provides excellent traction in both dry and wet conditions - Tread design stays clean in a variety of conditions - Unlined, breathable, and durable Matryx upper made with Kevlar fibers and polyamide for long-lasting performance - 3D-printed thermoplastic polyurethane reinforcements - Padded collar - Reflective details