Very handy
My husband made the mistake of thinking he didn't need to clean stainless steel bottles if he only drank water out of them. He figured rinsing was good enough. Then he looked inside the bottle with a flash light. This product saved his bottles! I use it on my daughter's hydroflask, does a great job. I wish the handle was a little longer and the brush part was a little bigger, but it works.
Rating: 5 stars