Merrell® Men's MTL Long Sky 2 is the ready-for-anything elite trail runner. Featuring an internal bootie for locked-in fit atop FloatPro Foam™, our best midsole, this shoe thrives on long runs and is designed to withstand the ever-changing elements with quick-dry construction. And when things get slippery, the Vibram® MegaGrip® outsole offers best-in-class traction. These shoes are built from the Merrell® Test Lab, their product advancement incubator. All MTL shoes are rigorously tested and validated by Merrell athletes and meet their highest bar for elite performance capabilities. Breathable mesh and TPU upper 100% Recycled laces Gaiter D-Ring Reflective details for increased visibility in low light 100% Recycled tongue webbing Internal bootie for locked-in fit 100% Recycled TPU for durability Breathable mesh lining 100% Recycled mesh footbed cover Cleansport NXT™ treated for natural odor control 50% Recycled EVA foam footbed FloatPro™ Foam midsole for lightweight comfort that lasts Vibram® MegaGrip® high performance rubber outsole features unparalleled grip on both dry and wet surfaces Product Features: Midsole:FloatPro™ Foam Upper:TPU (Thermoplastic Polyurethane); Breathable Mesh Outsole:Vibram® MegaGrip® high performance rubber for dry and wet surfaces Lining:Breathable Mesh Footbed:EVA (Ethyl Vinyl Acetate) Cushioned Foam (50% Recycled) Merrell Men's MTL Long Sky 2 Trail Running Shoe