I use this to bind my chest (afab transperson) and it does a great job flattening everything. I'm a 38DD--or maybe a little larger--and an XL works for me. I've used several different binders from Underworks. I think this is one of the more effective ones with the power rating for compression. Typically I use the ultimate chest binder tank because I need the extreme compression to actually flatten my chest. I was pleasantly surprised that this works just as well without the additional compression that can lead to additional discomfort by the end of the day. I love that this can be worn as a tank top. My one problem with it is the cotton layer is not as slippery a fabric as the nylon layer so it gets a little stuck taking it off over your head. Easily fixable with a little more practice.
FTM Chest Binder Underworks Concealer Tank – TG Supply
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