A modern classic - Ultra is a great looking, streamlined winter boot for kids that is made from a high tech PU material, which keeps feet warm no matter how cold it gets. Quick to get on and off and easy to clean, Ultra is made from a flexible Polyurethane called Elastopan®, which is 100 percent PVC-free and contains millions of tiny air bubbles. This makes it 40 percent lighter than PVC or rubber and offers 2.5 times more insulation than normal PU boots. Combined with a lofty wool blend lining, Ultra keeps feet warm down to -20°C. Viking's Nordic last leaves some extra space for the toes and stays comfortable all day long. A thick PU sole with large lugs grips well and four bright color combos complete this unique winter boot that is loved by both kids and parents alike.