The lightweight and flexible construction makes the MQM 3 GTX suitable for running as well as walks and hikes, while the durability and grip levels ensure they're reliable during light scrambles. The third generation of the MQM, these boots benefit from a partially recycled construction, improved lacing design and a new, grippier Vibram TC5+ sole.GORE-TEX waterproof and breathable membraneMesh and TPU upper - lightweight and breathableVibram TC5+ outsole - exceptional grip, traction, durability and flexibilitySuper Rebound Compound - durable shock absorption in the heel reduces torque and smoothes the transition to the midfootMerrell Air Cushion in the heel absorbs shock and adds stability100% recycled laces and webbing100% recycled mesh liningBellows tongue keeps out trail debrisProtective toe capEVA foam insole with 100% recycled top sheetMolded nylon arch shankRock plate for protectionLug: 5mmMedium width