Good value
These bottles are a thumbs up. They are nice, thick glass. The dark blue color will help protect your oils from UV rays. These are not frosted glass but the glass is blue, not painted. The roller balls glide smoothly but they are acrylic so they probably shouldn't be used with citrus oils. The roller ball snaps firmly into the bottle and I have not noticed any leaking. Overall I am pleased.
Rating: 5 stars