These bottles are made of high quality tough plastic. They are colored brown to keep light from damaging the chemicals, but have a panel allowing you to write on the bottles.
Reviewed by 3 customers
It's just a dark container, which is perfect for storing your developer (which is photosensitive). At that, it is great!
It is what it says on the outside :-) Only thing I would personally have preferred is that it was a liter, which is just a tad more than 32 oz (33.8 oz in fact).
I use this product for my developing chemical storage after mixing concentrate. It works great!