What are the materials in the insoles?

OluKai footbeds feature polyurethane (PU) foam which provides the soft, squishy comfort and all-day arch support. Depending on the style of product, the topcloth materials can vary from: full-grain leather, an airy mesh, a soft-to-the-touch microfiber, or a cozy wool-blend. Materials are selected based on product type, all with comfort in mind.