These winter boots offer waterproof and insulated protection to brave the cold weather, and their lightweight but durable design makes them perfect for rough terrain. Ideal for outdoor fun! **** Size Up For Best Fit ! **** Nylon textile and rubberized PU upper is waterproof, lightweight and flexible Seam-sealed, waterproof membrane construction keeps water and debris out Features 3M ThinsulateTM thermal insulation layer cold-rated, delivering 360-degree insulation Fleece lining and removable thermal sockliner for an extra layer warmth and comfort Deep lugged TPR rubber outsole built for maximum grip on wet and snowy terrain Double hook and loop straps allow for secure fit and custom adjustability Rubber toe cap adds durability and protection Awarded the Seal of Acceptance from the American Pediatric Medical Association (APMA