Pack of Twenty Four, 1 count each (Total of 24 Kits)nNew Anti-backflow technology prevents sinus re-infectionnEasily controlled positive pressure wide opening easy to add premix and waternMaintenance free dust preventive lidnProven effective for rhinitis u0026amp; sinusitis nasal allergies sasal congestion nasal dryness post nasal drip cold u0026amp; flu and post nasal surgery carenAnti-backflow technologyn