I have always had very tight shoulders. which tool works best tight shoulders. I have to correct my head position and my shoulders are rounded a bit. Also my upper back is tight
For the t spine the Gemini
Go to the Gemini page click where it says learn how to get the most out of this mobility product (under the photo), click on one of the + signs and click the view video link that comes up.
Kelly speaks about using the Gemini to address head position at 1:50.
Thanks Kaitlin. I did see the video and saw that. I ended ordering the Gemini, because of that and the other one was out of stock.