• First, some more info on why traditional mattresses may be harmful from Babble.
• Next, we found the following research from A Child Grows In Brooklyn helpful. The author narrowed down her choices to a few brands. We started there.
We should also mention we found a lot of discussion on mattresses from Ikea. It seems in other countries, flame retardants are not required by law, but mattresses in the US do have a "natural" flame retardant. To sum up what we found, the mattresses from Ikea are a much more affordable option for those who can't spend the money for an organic mattress.
We were leaning towards the mattress from Ecobaby, but in the end we decided on the No Compromise Organic Cotton Classic mattress from Naturepedic for two reasons:
1. We were expecting our baby in a matter of days and needed a quick delivery. (Yes, we were debating/researching until the last minute)
2. We decided having the waterproof surface of the Naturepedic mattress versus the wool surface of the others might come in handy. We found another review from Safe Mama and we were convinced. We used the coupon code for free shipping on her site.
Cool Mom Picks has a review of another mattress, the Natural Mat mattress, that we did not investigate. You might want to check that one out.
We like the mattress from Naturepedic. It's extremely firm and fits snugly into our Gulliver crib. There was no odor whatsoever when we received it, and we were very happy with the quality overall.
We can also add that, due to some strange unforseen circumstances, we had to move leaving all of our furniture behind and start from scratch a week after baby was born. So, we also got to test out the mattress from Ikea since we couldn't afford to re-buy the organic mattress. The Ikea mattress is definitely not as firm and caves in in the middle which we don't like, but there was little to no odor when we bought it. For the money, it does the job well and baby seems fairly comfortable on it.
Hope that helps!