Kamik® Youth Rocket is a time-tested style that goes on easily and protects small feet from the elements. Waterproof, rugged 600 denier nylon upper Removable 8 mm. Zylex® liner Adjustable snow collar with bungee lock Adjustable midfoot Velcro® strap Reflective patch Moisture wicking lining Lightweight recyclable PVC free synthetic rubber shell Kamik® RubberHe shell remains flexible in both hot & cold temperatures Kamik® Snowave® outsole provides great traction Made in North America Product Features: Upper:600D Nylon Height:9.5" Waterproof:Yes Shell material:Synthetic rubber Comfort Range:-40ºF / -40ºC Weight:Approx. 1.5 lb. Liner material:8mm Zylex® 3 layer polyester felt, moisture wicking Kamik Youth Rocket Lined Winter Boot