OluKai uses natural, high-character leathers. Hues and color tones can vary slightly from pair to pair. Drop-In-Heel® design offers both a shoe or slide functionality for easy-on, easy-off wearability. Perfect for walking right out onto the dock in St Pete or Sanibel Island. A custom, hand-woven, antiqued and burnished full-grain leather upper with soft, breathable single layer mesh lining and elastic gore panels for a customized fit. Lightweight midsole with a non-marking 'Wet Grip Rubber' outsole, siping and articulating features for added traction on wet surfaces.