The best in my opinion is the Schiesser Tank Top Vest.
The classic white undershirt comes in a small cardboard box into the house, to the most important information available. The special feature of this unlikely soft and finely woven shirt is that it consists of 95% cotton and 5% elastane. Thus, it adapts perfectly to the body without constricting. Thanks to the broad support and the rather narrow section you can see it under thin, white shirts hardly and it is not bulky. I think that's better than if you, for example, wearing a T-shirt underneath. Or nothing.
Also a wash at 60 degrees (you can also wash at 95 degrees) and a first round in the dryer has survived the undershirt without damage and without entering.
The size M fits my husband perfectly. It sits not too tight and not too far, but it clings to pleasant.
Anyway, here convinced the quality and processing. The seams are perfect and the matt shiny cotton even looks really classy. And that with a camisole!
Schiesser has demonstrated here once again that they can do more than just fine rib!