they are portable, but only after you have taken out the cups, which just goes to happiness through openings in the feed. Then the tops give a correspondingly lightweight support.
The cups are slightly bulging flexible foam bowls - literally and thus no anatomical curvature but simply placed on the chest and is expressed as from even through the material and any overlying layers. You slip freely in lining on each one-quarter (of the stitched chest middle to the side seams under the arms can be found by the Cups) therefore draws tugs and pushes you it forever it eh no longer be folded and sitting there where they should - as they remain in accordance not take long depending on exercise intensity.
My conclusion: okay underneath in not too heavy breasts but definitely not worth nearly 30.