From Merrell, the Women's Vapor Glove 6 Mesh Sneakers feature: 100% recycled breathable mesh upper Merrell Barefoot 2 construction is designed to keep the foot in a natural position Bellows tongue keeps out debris Cleansport NXT™ treated for natural odor control  100% recycled laces and webbing 100% recycled breathable mesh lining 100% recycled mesh footbed cover 30% recycled integrated EVA foam insole External rear sling locks in the heel Vibram Ecostep Recycle outsole designed with 30% recycled rubber which provides added durability and improved grip on wet and dry surfaces Stack Height (heel/toe): 6-6mm Drop: 0.0mm Lug Depth: 2.5mm Imported.