The Special nose-fitting seals attached to the top of the CPAP PRO®. Silicone type material provides a comfortable fit and is hypoallergenic. Two (2) puffs per pack. Available in Standard & Large sizes. The NASAL PUFFS are available in three sizes. All CPAP PRO® units ship with the Standard Size Nasal Puffs which will comfortably fit most users. We also stock a LARGE Nasal Puff. You may order your preferred size below.