Long miles and rough terrain don't stand a chance against a running shoe engineered to conquer the challenges of any trail, any altitude and any distance. Double layers of Helion™ superfoam and CloudTec® architecture quadruple the cushioning under every stride, with closed-channel construction and welded overlays keeping stones and trail debris at bay. The breathable sock and mesh shell keep the upper ventilated and moving, while an innovative FlipRelease™ clip loosens the lacing with the flip of a switch to relieve pressure on swelling and soreness as the miles progress or your run is over. Trail: provides superior stability and traction on hills, uneven surfaces and changing terrain Distance: maintains consistent, reliable cushioning and support on longer runs Pull-on sock upper with external lacing shell FlipRelease lacing clip relieves pressure on tired feet with the flip of a switch Removable, cushioned insole allows for custom orthotics Helion superfoam cushioning delivers lightweight energy return even in hot and cold temperatures CloudTec sole provides a smooth ride that moves naturally with each stride Missiongrip™ multidirectional lugs in the tread maintain superior grip on changing terrain Textile and synthetic upper/textile lining/rubber and synthetic sole Imported Men's Shoes