M.G.
I used it with my twins and we nursed for a LONG time. I would use it even if I only nursed one, but of course it is made for tandem nursing. It is much sturdier than a boppy and doesn't sag at all. It is a hefty price (I think $54), so check with a local twins club for their resale. You might be able to snag one cheap (I only paid $20 for mine). Just know that is is much, much bigger than a boppy, so it takes up a ton more space and isn't easily portable, so taking it places is less convenient than a boppy.