Clarks - Bona (Brown Nubuck Leather) - Men's: The Bona boot has seam sealed, waterproof nubuck uppers, with neoprene trim to lock out moisture and keep your feet dry. Padded tongue and elasticized collar allow for flexible movement with instant comfort. Nylon brushed, Ortholite footbed absorbs shock and wicks away moisture for healthy foot environment. Slip-resistant, vulcanized rubber outsole features foxing bands for traction and stability. Strobel construction, where the upper is attached to the sockliner and applied to the outsole. This flexible and durable construction allows the foot to rest properly on the insole cushioning.