The versatile Sorel Yoot Pac boot can be used for everything from throwing snowballs to walking to school in the winter. Waterproof PU coated leather upper with a seam-sealed, waterproof construction. Removable 9mm washable recycled felt inner boot with Sherpa Pile snow cuff for extreme warmth. 2.5mm bonded felt frost plug cushions and keeps out the cold. Handcrafted waterproof vulcanized rubber shell with a herringbone pattern for grip on icy surfaces.