Newton has a baby mattress that we also love. They are breathable, organic, and easy to clean. Rumor has it that if your baby sleeps on the same mattress from one place to another, they'll sleep better...

We love the depth of this pack and play much more than the Nuna Sena Aire. The Nuna didn't grow as well with our kids (as they got taller, they were able to get out of it pretty easily). Friends also love the Guava!