The Kids' Element Collection offers a fully waterproof and fleece lined boot built for winter's cold weather adventures, walks to the bus stop and more! This is the perfect boot for kids to play, trudge, and move when the temperature drops. 5mm Neoprene Bootie for Comfort and Performance bioDEWIX™ Dry Footbed Insert Topcover with NZYM™ for Odor Control and Moisture Management Lightweight EVA Midsole for All Day Comfort and Support Rubber Cup Outsole for Traction Warm Lining: Soft, Insulation, Light-weight, Performance Materials for Warmth and Comfort