Sorel CHILDREN'S YOOT PAC™ NYLON BOOT Little Kids Size 11 / Chrome Grey and Black With a waterproof nylon upper, seam-sealed construction and cozy insulation, cold weather doesn't stand a chance. Also, there's no need to tie these conveniently toggled laces. The inner liner with a sherpa collar is removable and washable. UPPER: Waterproof nylon upper. Seam-sealed waterproof construction. Laces are not waterproof. INSULATION: Removable 9 mm washable recycled felt inner boot with Sherpa pile snow cuff. Uses: Heavy Snow Imported