There are traditional nasal masks (by far, the most popular with CPAP users), alternative nasal masks, full face masks (for those patients who have problems with mouth breathing or leaking from the mouth), nasal interface systems (such as nasal pillows systems), and oral masks. For the best possible choice, stick with what has worked for you in the past. If you do well with nasal CPAP masks, stick with them. Each manufacturer has taken great lengths in designing masks that will suit your very unique facial structure and therapy needs. If this is your first mask purchase or if you are unhappy with your current mask type, please give us a call and we will be happy to give you suggestions based on your individual therapy needs.