Very good quality; useful extras [SEP] I'm very pleased with these glass bottles. The glass is thick and, while it's certainly not immune to breaking, it can deal with the occasional bump without a problem. Having it be tinted brown is great for limiting the amount of UV that can enter, plus gives it a nice look.  The caps are excellent and provide a good seal. The sprayers are just OK. They work, but are not all that heavy-duty. I'm using these more for storage than application, so I'm more interested in the cap seal than the sprayer.<br /><br />It also comes with a very useful funnel, a dropper and a white marker. The funnel is something that I'll use often; I won't use the others. But, it's a nice complement of accessories.<br /><br />The bottles come very well packaged with two layers of bubble pack, and are in a box that's the right size to prevent things from moving around. They arrived in perfect shape even though they were shipped in a non-padded ship bag.<br /><br />Very pleased with the set -- 5 stars!