OLUKAI Kamuela Casual Boot - Men's Nero/Toffee 13 Leather Naturally weather-resistant full grain leather or waxed nubuck upper 2 Lacing Color Options Anatomical dual-density PU footbed for cushion and support with microfiber synthetic suede cover. Removable, washable, and anti-microbial. All-weather rubber outsole with full grain leather foxing and non-marking rubber traction pods. soft microfiber synthetic suede lining with anti-microbial treatment.