They're very nice for what you get. Their colors make them look like glass.
Containers are very firm. They're easy to hold and use. The spray portion locks, so make sure you unlock before you try to spray.
They offer a very wide spray and there's no way to adjust it. So if you want a more narrow spray area, then you need to bring the bottle closer to what you're spraying.
Trigger is very easy to use and doesn't require a lot of pressure. My fingers are crossed they sprayers don't break too quickly as that's the most likely item to give out first.