Kamik Samantha Rain Boot (Little Kid/Big Kid) 100% Rubber-and-fabric Rubber sole Shaft measures approximately 11" from arch Boot opening measures approximately 15" around Waterproof 5mm neoprene upper Hand-lasted printed rubber shell Easy on side handles Minus 25F temperature rated Cushioned antibacterial footbed This insulated rain boot from Kamik features a grippy tread and comfy, flexible construction.