Try www.ecobaby.com or www.gaiam.com. Ecobaby does tend to be more expensive than other sites, but I know they have them. I bought mine 2 1/2 years ago and the very best price was with Real Goods. I *think* they have merged (at least with part of their stuff) with Giam. I will see if I can think of any others. BTW, they are organic cotton and wool mattresses. The wool is a natural fire retardant.
edited to fix spelling.
edited to fix spelling.
