NeilMed Sinus Rinse has a custom-designed cap that comfortably fits any nasal opening. It is excellent for cleansing before the use of nasal spray medications. It is suitable for use after sinus surgery or during pregnancy; consult your physician with concerns. The product is pH balanced and isotonic with one packet, or hypertonic with two packets. This product is drug-free and preservative-free. The easy-squeeze bottle system allows you to deliver saline solution with positive pressure to clean the nasal passages thoroughly while maintaining your head in an upright position. You have complete control of the pressure and volume of solution, ensuring a gentle and soothing experience. Daily rinsing is safe and will keep your nasal passages clean and healthy. The product features a single piece, custom-designed rounded black cap that fits any nasal opening, and is easy to clean due to the absence of push and pull components.