Sperry Womens Saltwater Alpine Tan Snow Boot is a waterproof winter boot made of leather with a lace-up closure and ankle shaft style. The boot has a solid pattern, round toe shape, and a flat block heel style. It is designed for travel, activewear, and casual occasions. The outsole is made of rubber, and the boot is lined for warmth. The Sperry Saltwater model is available in size 5.5 UK and 8 US, with a medium shoe width.