I tried obtaining a different brand, but not only were sizes too limited, but in one instance I got sent the next size down. That didn't happen here. This brand is the same from what I can tell, and offers all the comfort & support you need for harvesting lactation.
This item is available from retailers, but this method of purchase works just fine. I think you'll be pleased if you get this for yourself. More sizes are easily available, and they seem to all ship domestically, meaning less waiting for you.