Nylon Webbing with reinforced junction points, water friendly & Vegan. Soft webbing toe strap. Therm-a-Rest TM footbed provides instant soft comfort, grip, flexibility, flushes out water and air cools the foot. EVA foam. Assembled with Water Based Glue. Sponge rubber provides grip and flexibility. Designed for heavy exposure. This style is Vegan friendly, contains no animal materials or by-products.