lightweight, they don't tear when you try to remove them from the tape, quite long when I glued them under my natural lashes, my natural ones were not visible.
from the downsides, most likely, to make it look nice and not show your own eyelashes, for one eye you need 6/9 pieces, compared to others I needed only 4.
but for me it's not exactly a minus, I find them 3/4 times.