The youth’s SHELLISTA Extreme is a maxed-out warm, protective winter boot for longer playdates outside in the cold. 200 grams of Heatseeker insulation is warm and retains heat even if wet, essential for kids at play. The upper is fully waterproof suede and leather, durable and supple. A plush faux-fur lining keeps feet warm and is soft to the touch. The TPR shell bottom and Winter Grip rubber outsole are both flexible, light element-shedders with great traction on variable surfaces.