Abstract: A boating helmet includes a liner nested in a shell and a shield attached to the shell. The shell includes a moisture barrier to separate a user's breath from the shield and an air entry chamber to keep inadvertent water from the shield. The liner's inner surface defines warm-air and cool-air channels. When the helmet is worn, the moisture barrier contacts the user's cheeks, separating the areas above and below the moisture barrier. The user's breath enters the warm-air channels, is directed through left and right ear regions, and exits the helmet, warming his face without fogging the shield. Ambient air enters the air entry chamber through a ventilation hole, and inadvertent water is drained. The ambient air is drawn across the shield to keep the shield from fogging, through the cool-air channel, and out of the helmet. The mask further protects a user from precipitation and impact with insects.