Shearling Boots are boots made from sheepskin that has gone through a shearing process to obtain a more uniform look to the wool fibers. Shearling Boots usually have leather or sueded leather on one side and fur on the other.
About Waterproof:
Waterproof materials deflect water, and cause the article to not become bogged or soaked with water. Waterproof material is common in outerwear, footwear, and bags.