The Speed Eco offers Merrell most sustainable and environmentally friendly hiking shoe with recycled laces, upper, lining, EVA footbed and recycled rubber outsole. The Speed Eco is Merrell 's most recycled shoe to date and will hike you with the comfort you expect from Merrell with the ability to request any route or hike. Cleansport NXTTM Treated for Natural Odor Control, 50% Recycled Recycled EVA Foam Footbed.