From the Spherica Collection. Spherica™ EC7. 1 is a waterproof ankle boot for women with a casual contemporary aesthetic and a practical side-zip closure. It features an attractive upper in leather, and rests on an ultra-cushioning breathable platform sole that exudes feisty energy. The special Amphibiox membrane protects against rain, mud and snow, leaving your foot completely dry. The high breathability helps with natural internal temperature regulation, removing moisture from the shoe and guaranteeing freshness or warmth depending on the external temperature. Shoes featuring Amphibiox technology have been designed to provide different levels of water resistance depending on your needs.