Plastic bottles, but they fit on glass
I like that they're cheap, and finding an empty nasal sprayer elsewhere isn't easy. However, the bottles are plastic, so I bought some 2 oz glass bottles, and the threads were the same. I just had to cut the feed tubes a little cause they were too long.<br /><br />I would gladly pay a little more for them to come with glass bottles though. But the fact that they fit on small glass bottles is great.
Rating: 4 stars