OLUKAI. 20427-OXDW. MALUA HULU. ONYX WITH MIST GREY. Named after a wind that graces Maui s rugged coastline the Malua Hulu offers an invigorating rush of possibility in every step. A ready-for-anything slip-on made with genuine shearling lining and waterproof nubuck leather these boots were designed to comfortably take you out of your comfort zone.