I'm not sure if I have TOS or Carpal Tunnel Syndrome because the symptoms I have fit both.

I have severe hand and wrist pain at night, as well as numbness of my hand and all my fingers, with the numb feeling exending up past my elbow.

The only way I've been able to get enough relief to be able to sleep at night, is to wear a wrist strap that looks exactly the same as the one in your picture.

Mine is a bowler's wrist strap!

Before Multiple Sclerosis I was a champion Ten Pin Bowler, and the wrist strap is something we bowlers use from time to time. When my wrist, hand and fingers started playing up, I dragged out my old bowling wrist support and started wearing it to bed. It finally gave me enough support to allow me to sleep at night. I no longer get woken in the middle of the night with hand and wrist pain.

The photo that you provided looks almost identical to the one I have. In fact, I think the only difference is in the strap that holds the support onto the wrist.

I don't remember what I paid for mine, but it might be an idea for others to compare the price at their local bowling alley (or sports store) with that at your local pharmacy before outlaying the cost for a support like this.