The Carson by Bogs is a traditional Chelsea boot with a few modern twists, such as excellent insulation and 100% waterproofness. Pliable durable rubber upper with 2mm Bogs Neo-Tech insulation. Features EverDry and Bogs MaxWick to wick away moisture to keep feet dry. DuraFresh biotechnology treated to help fight unwanted odors. Dual-density EVA insole. Comfort rated to 14 degrees F/-10 degrees C. Backed by Bogs 100% Satisfaction guarantee.