An amazing back roller, get the tight spots out of your back and spine!

Approximately 9"D x 5"W.

Features

1. Less than one spool of filament ~925g.
2. Harder, for those that want a little more intensity than foam.
3. Triangular infill in the direction of force, should be the strongest infill for this purpose.

Note: Do not use on a slick surface--carpet or rubber surfaces recommended.

I have printed it only in PLA, please let me know if you print it in something else and how it went!

Disclaimer

I have not tested this to confirm a weight limit. It seems very strong (I'm guessing 300+lbs).

I am also not a licensed chiropractor or medical professional. Use at your own risk!