100% High Quality Synthetic Materials. Made in USA or Imported. Rubber sole. Outsole: All-weather, non-marking rubber outsole with razor siping for grip on wet surfaces. Footbed: Dual-density PU anatomical footbed with polyurethane gel insert. Soft microfiber cover. Removable and washable. Drop in Heel: OluKai's Versatile Drop-In Heel offers both shoe and slide functionality for effortless island living. Vegan Friendly: OluKai's vegan friendly footwear offers the durability, traction and support you expect from OluKai while using 100% high-quality synthetic materials, 0% animal products.