Henderson H2 5mm No Zip Boot nylon Imported 90% neoprene, 10% nylon Zipperless Design - elimates cold water entry common with zipper style boots. Molded Sole - exclusive Henderson molded sole designed for use with fins and all types of diving conditions. After use rinse with fresh water and set out to dry, not in direct sunlight. Do not machine wash or dry, dry clean or bleach. China/USA