The Kamik Men's Greenbay 4 Snow Boots feature a synthetic upper with a Round Toe. They're built with Man-Made outsole for superior durability, adjustable midfeet hook-and-loop fasteners, & waterproof, flexible synthetic rubber shell. Featuring removable 8mm thermal guard liners and moisture-wicking linings, lace-Lock Snow Collars that keep snow out, and prime outsoles for increased traction. Get ready for anything with the Kamik Men's Greenbay 4 Snow Boots.