Degrees 180s Illinois Fighting Illini Fleece Ear Warmer Muffs for Men Size: one size fits most. Color: black. Collapsible, adjustable ear warmers are perfect for: tailgating, game time, team sports, cold weather, athletics, everyday team spirit! Unique fabric construction balances thermal insulation, wind-blocking, and breathability to keep you warm and dry. Works with hats, helmets, and glasses.