Clarks - Neutron (Black Leather) - Men's: 'Neutron' is made with breathable, full grain leather uppers. Subtle instep goring and padded collar give added comfort. Shock absorbing, leather and mesh covered Ortholite(R) footbed help reduce foot and body stress. Slip-resistant, molded rubber outsole gives you added stability for all day wear. 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.