This is a cool product in terms of concept and idea, but the design doesn't really fit the way it is supposed to work. The straps pass under the back of the armpit and the Velcro on the front near the collarbone. This will cause the back brace to slide down and slip when you tighten it. You will need to redesign the strap so that it goes across the chest/sternum for better support and the brace doesn't slide down the back. Not really worth buying if you have really bad posture and a good mix of rubber stretching and deadlift exercises suits you better.
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