Karhu Men's Forward Fulcrum Ride Running Sneaker 100% Mesh Synthetic sole For the efficient runner: engineered with a cupped midfoot to deliver maximum balance and performance for a responsive and efficient ride Breathable, creates a secure fit, locks down midfoot for a secure fit, lightweight for toe off durability, lightweight and low profile for performance, promotes the natural abilities of the foot, adds cushioning without adding weight, or excellent moistur