Men's Nautical Billfish Top-sider size 11. 5 medium width Dark tan. Molded EVA cushion midsole, 360 degree lacing system with rust proof eyelets. Non-marking rubber outsole with wet/dry traction. Shock absorbing EVA heel cup, Genuine handsewn tru-moc construction & padded tongue, Air-Mesh upper panels for cool, breathable comfort around the foot.