Hi Lucia, welcome to the MAC group. You'll notice that I moved your question about the smart vest and back pain to this existing discussion about using a vest. I did this so that you can read the past posts and easily connect with members like @thumperguy @sueinmn @flib @gj53 @migizii @degree @1065408 @alleycatkate @poodledoc @rits @woot and so many more who can share their experiences with you.

You may also be interested in these related discussions:
- Percussion Vest and Nebulizer: Do you use both, one or the other? https://connect.mayoclinic.org/discussion/percussion-vestnebulizer/
- Does anyone have any experience with a percussion vest? https://connect.mayoclinic.org/discussion/percussion-vest/

Lucia, how long have you had MAC? When did you start using the vest?

In reply to @lucialuciamsncom…I use the smart vest at 50% in the winter when I wear heavy clothes, but need to turn the volume down during the summer when I don’t have so many layers on as it can bother my back or chest…I go down to 45 or 40%.