CONTORTION ACTUATORS

You have replaced each of your limb joints with contortion actuators.  This augmentation allows to bend your joints in unnatural directions providing amazing flexibility.  Contortion actuators grant a +3 circumstance bonus on Acrobatics checks. You can also make an Acrobatics check to escape restraints or a grapple as a move action (as opposed to a standard action). You can squeeze through a tight space that is half as wide as your normal space without being considered entangled. Advanced contortion actuators increase the circumstance bonus to +6.  This advanced augmentation replaces several vertebrae in the spine with contortion actuators.

This cybernetic augmentation can be combined with lockdown actuators without an augmentation plexus.