This product scales the torso and gives it a wider appearance.
There may be very minor distortions/warping in the face during animations or certain poses that involves a lot of spine bending.
This only scales your torso, so you can scale your arms/shoulders and hips/legs separately!
If you're experiencing scaling issues, either try different sizes of other scalers, or if you're experiencing very strange scaling issues, try removing your scalers one by one as the other scalers may be conflicting with this one.
Here's the scalers I used: