Made with perforated neoprene and vulcanized rubber, ZipIt II Flats Booties keep your feet protected. In addition, they feature gusseted openings that make for easy on and easy off. Suitable for saltwater use, Simms® ZipIt II Flats Booties can be worn barefoot or with a light liner sock. FEATURES: Perforated neoprene upper with vulcanized rubber overlays for added durability Durable vulcanized rubber outsole molded EVA sock liner, full-length BiFit lasting board for puncture resistance Gusseted opening for easy on/off Locking corrosion-resistant zipper Designed to be worn barefoot or with a light liner sock Suitable for saltwater