From Sperry Men's, the Mako 2-Eye Boat Shoes feature: Genuine all-leather nubuck upper Genuine handsewn Tru-Moc construction Leather lining Adjustable 360° lacing system™ with rust proof eyelets Padded tongue and collar Shock absorbing EVA heel cup with heel pillow Dual-density bottom with cushion midsole Non-marking rubber outsole with razor cut Wave-Siping™ Imported.