Sun-San Salt-Water Surfer Tan. Salt-Water and children's line Sun-San are a real treat for the feet. The Salt-Water Original sandal for women was the first model to come out of Walter's workshop in 1944. With water-resistant leather upper, vulcanised rubber sole and rust-proof buckle, these sandals can be worn in the water as well as put through a cool machine wash. They actually soften through exposure to water and mould to the wearer's feet with repeated wear. Adult and children's styles are equally as robust, long lasting and comfy to wear, and come in a range of gorgeous colours.