Breathable Crib Mattress/Got from TryIt
This is a great crib mattress. I like that it's made of a dense 
but breathable fiber on the inside with the organic cotton cover. 
The cover is water repellent and can be removed and washed. 
I did opt to cover mine with an additional waterproof 
cover to keep everything cleaner. I like that the mattress is hypoallergenic . 
It's nice and firm and my baby seeps better and enjoy sleeping on it.