Upper is made of suede and textile Metal hook and lacing eyelet to ensure secure lacing Tongue with bellows to keep debris out Toe cap made of protective rubber M Select FRESH antimicrobial agents to reduce shoe odor TPU heel counter molded for added stability Lining made of breathable mesh Kinetic Fit BASE insole contoured like your foot for flexible, intuitive support Molded nylon arch shank Merrell Air Cushion in the heel to absorb shock and add stability M Select GRIP outsole with durable traction 4mm Lug Depth Weight: 1lb 1oz / 752g