Microfiber Rubber sole Microfiber Leather Upper: Soft, warm & water resistant. Holds up against different weather conditions and withstands the wear and tear of walking and running. Ergonomic Design: Loose-toe design prevents pinching and blisters, perfect for all-day use. Double Elastic Straps: Perfectly fits the shape of any foot, especially good for high insteps. Spain Elements Outsole Design: Artistic and thickened, anti-slip outsole brings a better walking experience. Ultra-lightweight Design：One-Piece seamless design weighs roughly the same as an avocado.