Hey Mr. Winter! There's no way you're going to get around Garneau's Thermal Extreme Shoe Covers! These covers are made of a 3mm-thick layer of waterproof neoprene backed with toasty-warm microfleece. Tough Kevlar fabric in high-wear areas ensure they'll last, and the neoprene cuffs seal tight with Velcro closures to keep out the weather. And, the Thermal Extreme's reflective accents are perfect for commuting to work early or finishing a long ride as the sun sets.