“It's a little wide for the top of the glass bottles (can't speak to tumblers or ss bottles). Maybe it'll get better after use but for now I'm getting sprayed with water and soap every time I use it.”
“I absolutely love this brush; so much so that this is the second one I've ordered. Now I have one I keep at my daughter's house.
It fits easily into my Waterdrop bottles and gets every curve clean. I highly recommend this brush!”