Product details:

The Classic is 100% waterproof with a durable hand-lasted rubber over a four-way stretch inner bootie, a Bogs Max-Wick moisture-wicking lining to keep feet dry and comfortable, and a non-marking and self-cleaning outsole. A footbed with DuraFresh bio-technology activates to fight unwanted odors. Constructed with 7mm waterproof Bogs Neo-Tech insulation for comfort rated from temperate to -30F.