Freemie breast pump?

Me

I’m a mail carrier, so IF my insurance will cover this particular pump, I thought about trying it so I can pump while working much easier. However I have a couple of questions:

1. Does it hold as much as other brands?

2. I have large boobs (36DDD). Have any other large breasted women used this pump and liked it? It seems to be better catered to smaller breasts.

I thought about POSSIBLY getting another pump for home use, and then this one for work. However, I also read that you can buy just the cups and use them with whatever pump you normally use. Does anyone have experience with this??

If you don’t recommend this pump for hands free pumping, please let me know what you would recommend!