When purchasing winter booties it's important to consider how much your child will be standing or walking in them. Unlike some bootie designs that work best for children swaddled in a sled or jogger these Molehill Shelled Booties feature a triple-ply shell of water-resistant Supplex® nylon and gripper material along the soles for walking and running so kids can get out of the sled or stroller and explore their winter wonderland. The interior lining consists of warm non-pilling fleece that keeps little piggies warm to the market and all the way home.