However, that is not to say that the graco pack n play bassinet Nautilus is a perfect product. There are still a few issues that graco pack n play sheets needs to iron out. For example, the crotch strap slot measures only 6.5 inches from the back of the seat compared with 8.5 inches on a Britax Frontier 85, which is its main competitor. As a result some graco pack n play mattress customers have complained that their child is practically sitting on the crotch strap.