This is the BEST nursing tank I have -- and trust me, I've tried them all. It's super flattering, nursing pads won't show through thanks to the padded cups, and it's VERY easy to unclip, but also clip back on with just one hand (I've found that many nursing tanks require both hands to fasten the clip back on).
I wore my grey one every other day during the last two months of my pregnancy, and it was incredibly comfy in the terrible summer heat. I kind of wish I hadn't, though, as my belly stretched it out, leaving it rather baggy under the bust now that I've lost my the belly.
Cons: 1) The seams going up diagonally through the cups are visible on the white tank (but not the grey), so you can't really wear it on it's own. However, it's still perfect for layering or staying in the house. 2) The straps are adjustable, but don't stay tightened if you're walking around -- so wearing it racerback helps to keep the fit snug.