Children's winter waterproof boots Bobux Aspen Boot from the Step-up series for the smallest children. They are insulated with 100% merino wool..TEX membrane ensures the waterproofness of the boots. The front is wide enough for unrestricted toe growth and movement. Highly flexible thermoplastic sole flexible in all directions, suitable for beginner walkers. Zip fastening on the inside for easy on/off. Genuine wool inner lining for perfect insulation in winter.