Quality getting worse
I have to agree with Linda Y. I noticed the same issue. I understand you need to replace the brush heads but them falling off because the hole on the brush head expands is terrible.
Brio Product Group
Hello, Lukasz! Thanks for your review - I'm sorry to hear you're having some trouble with your brush heads! The hole on the brush head should not expand, it's a fixed size. We have not changed our manufacturing, so I wonder if perhaps you received a faulty set of heads. I'll be reaching out to you directly to help! We're always here to support you at firstname.lastname@example.org or email@example.com.