Vibrating Crib Mattress

Leesha
I've been looking online and have only been able to find one made by Munchkin but was curious if anyone has found any that they like? Or if anyone has used that one and has any feedback on it.
My LO is quickly outgrowing the bassinet part of the pack n play and we are trying to transition him to the crib portion (not yet ready to move him to his room as he is only 5.5 weeks old) and he just won't stay asleep once I put him down, even if I wait until he is in a deep sleep.