Does what it says, but beware of renewals
The product is great when it works. It can stutter and stop during live games and the frame rate is poor compared to the previous incarnation pre 2017, but it's the only way to watch all NFL games legitimately. It's actually better to watch games the next day (once commercials have been edited out) than get frustrated trying to watch live.
However, I'm sharing a friend's subscription this year instead of us both buying one. I'll just have to cope with watching the Ravens with him, I guess...
This company openly lied at renewal time to hope I didn't notice a vastly increased price. Despite saying several times that prices were unchanged my subscription increased from £105 to £139.
They are based in Cayman Islands, so ASA didn't want to know and trying to talk to GamePass customer support was pointless. They're an offshore company with a monopoly who can do whatever they like, it seems.
So use caution. Be aware the subscription will auto-renew at the end of July unless you turn it off, and that you're probably better off canceling than remaining loyal anyway.