look, whoever created squeem should get an award...for the VEST, not this.  i got a medium in this and a medium with the vest, and lemme tell ya, what a world of difference!  this one would not even close, as the vest was hard initially but was totally closable...this product just plain sucks, with how hard it was, i probably needed an extra large for this particular model...check out the vest, it will do wonders for your sillouette and even help with back pain!