Did not receive as delivery provider Yanwen is unable to find my apartment, claims attempted to deliver & access code required, both of which are false. UPS & FedEx have no difficulty delivering to me. Will not buy from any provider in future if I know they use Yanwen.

I’m sure it will fine but it’s the exact same one that came with the kid and I was expecting it to be an upgrade. Just a little too pricey for what I got on this particular item that I didn’t really need.

It sounds like its working but no air is sucked out of the black bag