Okabashi Wave Slide Sandals (Women's) Reflexology-based design enhances circulation with proper arch support and massage beads. Sandals are easy to clean and sanitize in the dishwasher. Durable design means the sandals are guaranteed for two years. 100% recyclable material-simply return the sandals to Okabashi to be recycled. Material Content: 100% Microplast (typically contains 30% recycled material).