Your mug isn't much to look at, but you should still protect it from the sun and cold. Bandanas get soaked and freeze, and neoprene face masks make you look like you just stepped off the plane from Gaperville, USA. Enter Airhole's ventilated, moisture-wicking ninja masks - they'll shield your face from UV rays and frozen sprays while eliminating goggle fog and leaving your mouth available to breathe, drink, and inhale normally. Airhole. Ninja masks, you idiot.