i bought this a few weeks ago and i have been wearing it to yoga practice and it helps me keep my shoulders back and not hunched forward proper posture is important a good yoga practice and spinal alignment
The tight fit everywhere is annoying. The product over-promises and under-delivers as there is too little of an effect of support in the shoulders to improve posture.
If anything, the shirt works in concert, reminding my brain to hold my shoulders back while I'm wearing it; thereby strengthening and improving posture. After I wash it, it tightens again which is amazing because one would surmise that laundering would wear out its magic.