Olukai Hamakua chukka boot, born from the bold landscape of the Big Island, offers unsurpassed comfort and crafted style. OUTSOLE: All-weather, non-marking rubber outsole with full grain leather wrap. FOOTBED: Dual-density anatomical PU footbed with polyurethane gel insert. Removable and washable. NON-MARKING RUBBER: Our thermoset rubber is a compound of natural and synthetic rubber that will not leave marks or ‘scuffs' on surfaces of any type. Our gum rubber outsoles, as a natural material, will always naturally be non-marking. REMOVABLE FOOTBED: OluKai footwear is designed as the perfect environment for your foot. With this in mind, we have crafted our footbeds to be easily removable and washable.