The Columbia Girls' Powderbug Forty Boot brings the toasty embrace of the fireplace with you out into the snow with its furnace like 400g insulation, which is rated at 40F hence the name. Secure your fit with the customizable drawcord and adjustable hook and loop strap before heading off into the snowy playland. The waterproof synthetic leather and nylon textile upper, combined with a seam taped construction, delivers protection from the elements during any cold weather adventure. If you happen to notice a funky odor emanating from these boots, take out the 6mm recycled felt liner and toss it in the wash for a quick refresher. Whether shoveling the walk or heading out with the sled, the one piece, injection molded TPR shell provides stable footing over slick, unpredictable surfaces.