In rubber boots in the cold season warm insoles my design is simply irreplaceable. They differ from the ordinary in that, first, layered; second, in covers. After the contamination covers off, wash and re-use — convenient and hygienic. In addition, it allows you to greatly extend the life of insoles.
My insoles are from an old coat. According to a cardboard pattern to cut them to size and glued in several layers under pressure with glue BF-6. Durable, warm, comfortable. Covers for insoles made from old pillowcases. Without covers insoles wear out much faster.