The Merrell Women's MQM Ace Shoe is a Hybrid shoe for fast moving mountain adventures. Perhaps you're not on a hike, maybe not quite a run, but it's definitely something in between, so grab a shoe that is happy doing a bit of both. The engineered mesh combined with TPU at the Upper is breathable and durable to prevent overheating feet and for taking on trail debris. A sturdy TrailProtect rock plate shields the foot from rocky terrain and a Vibram Megagrip 4mm lug Outsole is just the right amount of traction necessary. Features of the Merrell Women's MQM Ace Shoe Engineered mesh and TPU Upper Lace-to-toe lacing for secure Fit Floating Hypercage for lightweight support Breathable mesh lining Merrell Air Cushion in the heel absorbs shock and adds stability Merrell Kinetic Fit BASE removable contoured Footbed for flexible support Compression molded EVA Midsole for stability and comfort FLEXconnect Dual-directional flexgrooves in EVA Midsole for agility and stability TrailProtect rockplate protects feet from underfoot debris Vibram Megagrip is a High Performance rubber compound featuring unparalleled grip on wet and dry surfaces Optimal balance of grippiness and durability 4mm Lug depth NATURAL FLEX, and SERIOUS GRIP to deliver agility and stability on any terrain Flex, and grip to connect you to your outdoor experience Optimal balance of grippiness and durability