It contains 6 different contortionist poses of chest and handstand with several levels of bendiness in a total of 21 poses.

includes:
15 chest and handstand poses in various levels of bendiness
+3 bent and twisted poses
+3 mirrors

To use a pose:

Make sure to set limits off when you apply a pose.
I also recommend you reset your figure's pose before you apply a new pose.

OBS:
in case you experience leg distortions, you can set "Base flexions" OFF on your figure's parameters tab as a quick fix.
this is reported on the forums and may be caused by some products misbehaving.