Started off w a different nursing bra that used a velcro closure, which I found SO annoying.  Besides being loud, it also was a snag hazard while you opened/closed it.  So first, I LOVE this bra's zipper closure.  The black fabric is thick and stretchy, so supportive AND comfy.  The design is also very effective ... no worries about shield or bra slippage, even though I use it without the optional shoulder straps. This is def a 5 star bra!