Build quality is very good. Tesla has three levels of fit for their compression wear. These are built for comfort.
Check all the images to the left of the sale link. It is the lowest image.
I'm 6', 215#, 38" waist, bought XXL. Could have fit XL like my underwear but with my bit of a gut the fit would have been too tight.
To be used as a base layer for cycling with unpadded shorts.