To provide a cup with a structure by which air is naturally taken-in when drinking a beverage so as to cool a hot beverage and allow a user to easily drink and have a mild taste.

A ring shape projection 2 is arranged on the outer periphery of the lips touch edge 1 of the cup, so that a lower lip is put on the double-ring when drinking the beverage. Consequently, the air is naturally taken-in from the right and left parts of the ring so as to cool the hot beverage, allow the user to easily drink and have the mild taste.