Here is the mattress round up. It's a rodeo out there of information, mis-information, "green-ing" of things are not even close to "green," and extreme over-use of the word "eco." Don't get me wrong, there is a plethora of options - and good ones, too. Simply depends on your budget. Here was the list of budget friendly options that I pulled from.
Another mattress I took great interest in for it's cool design and awesome marketing: the Nook Sleep System Full size Pebble. The middle of this mattress is made with a non-toxic foam core (read: certipur, a certified manufactured foam, not a natural product) and then topped with one inch of natural latex foam. What's on the outside of this mattress is what makes it different than the rest. The cover is removable and washable! Pretty cool for potty training and every-day kid accidents. Here is a link to their education section. Nook mattresses are made in North America. The rise is six inches and it's compression rolled to ship, no coils in this bad boy. Alas, it's not organic and for that price, I can still get organic. $995
Last but not least, and the winner of the Mattress rodeo: The Naturepedic No-Compromises Organic 2 in 1 Ultra kids mattress. Packed with 528 coils and 100% organic cotton, the comfort is medium-firm. Three sides are water and dust mite proof (great for potty training/food/spills) and the other is a quilted, more plush side you can flip to later when kids are heavier/bigger. The 100% cotton makes it hypo-allergenic with no wool or latex. It is also naturally dust-mite proof with it's polyethylene barrier (no PVC or vinyl here!). It's non-toxic flame retardant is composed of hydrated silica, baking soda and cellulose. NO phthalates (chemicals that act like hormones/endocrine disruptors). Here is a link to their education section. $999 directly from the manufacturer, but I purchased it from one of their preferred vendors (call to make sure) through Amazon for $899 and free shipping.
While you can easily spend $1300 to well over $2000 for an organic, natural latex full-size mattress for your kiddo, that just wasn't in our budget. There are other really great options if you pocket is a little deeper. If these price points are still out of reach, there is another way, too. My fellow green-mom Meagan told me how to take a conventional mattress and make it better:
Purchase the No-chem mattress wrap made of Polyethylene for $28.00 (non-toxic plastic wrap that doesn't allow off-gasses to escape into breathing space) and wrap those chemicals up tight! Now that you've created a noisy, plastic-y sleeping foundation, purchase an organic cotton or wool mattress topper, wrap it with a protective cover and slap on your fitted sheet. Then pray to God that you don't go flying across the room when all of the elastic gives way and the covers lose their grip :) (Organic cotton or wool mattress toppers go for $200-$400.)
Like I said before, when we considered what was in a conventional mattress, there was no looking back. We had to jump in with both feet and do a lot of reading and asking questions. Hope this was helpful... to at least one of the two people reading it.