See Kai Run Sanju II Hightop (Infant/Toddler) 100% Leather Rubber sole But his toes will stay cozy in this winter chukka boot. the navy suede and leather upper is lined with warm plush and accented with bright blue stitching and back pull loop. Suede & leather upper Cozy Warm lining with breathable leather insole for maximum comfort Hook-and-loop strap allows for a secure fit and custom adjustability