Merrell.com now offers the MTL Skyfire 2 Matryx Men's Trail Running Shoes, now $79.19 (MSRP $131.99), with promo code EXTRA40.Free shipping on orders over $75.Buy>>Editor's Pick: Anyone who runs on trails knows you need both reliable outsole grip and breathable uppers. These Matryx uppers are made of woven material that hugs your foot securely without overheating, so