Hip boots, or waders as they are colloquially called, are a type of tall boot initially designed to be worn by river fishermen. Hip boots are typically made out of rubber, and completely cover the legs, up to the tops of the thighs or all the way up to the waist. Hip boots are designed to protect the fisherman from water, and allow wading out into deeper waters in hopes of getting a bigger catch. They also help to keep the feet and legs warm in autumn and winter. Hip boots are also worn by many ecologists and environmental scientists who do tests in swamps or lakes to determine the quality of water.
Hip boots are necessary footwear during flooding, and can be a part of everyday city raingear in order to protect from heavy showers (currently most popular in Japan and Russia as female footwear, usually worn with jeans and raincoat).