Very glad I purchased these
I only received these a few days ago, so I can say nothing about durability yet -- if that changes in a negative way, I'll update this review.  But they certainly feel durable.  I've been using OTC saline sprays (aka Ocean) for decades due to sinus issues (including narrow sinus passageways that clog too easily).  But recently, I started reading about one of the ingredients in those sprays -- it's more than just salt and water -- and didn't like what I read; I'd experienced the symptoms reported due to that ingredient: initially good, but then membranes dry out uncomfortably.  Since I've used homemade saline solutions for years to flush my sinuses with a bulb, I tried emptying an OTC bottle then refilling it with my own saline solution.  It worked OK, but as always, the dose is more of a squirt than a spray.<br /><br />So, I tried these.  SO glad I did.  They produce a very fine spray that's very comfortable.  Two or three 'squirts" per nostril, blow my nose, one more per nostril and I'm good for hours.  I've filled both with my saline solution, and one will remain home while the other rides in my everyday pack.
Rating: 5 stars