The placement of the back straps keeps the front in place and even adds support to the bust, so even some larger cup sizes can wear without a bra.
The fabric is not very flared at the bottom, and there is no slit, so the fabric keeps you from taking huge steps. It is fine for walking around.
Because of the flared bottom, there is a lot of fabric and can be very overwhelming on a smaller frame
Would need to be careful with underwear worn with it as it is such a low back and they might peak out