I am over the moon about our new custom made ORGANIC car seat covers. The wonderful Kate at Sassy Stork (whom I found on Etsy) made these and I am so pleased.
When we purchased our toddler car seats, I did a lot of research (using the EWG web site) to find the healthiest/safest car seats that we could. We opted for the seats that were ranked the cleanest, but I still always struggled with the possibility of unknown chemicals applied to the fabrics during manufacturing. I also did a search for custom covers at that time, but didn't find any options that were organic (primarily, that used organic batting).
Now there is an option, which is wonderful! These covers replicate the exact dimensions and fit of the manufacturer's version that we are replacing.
Sassy Stork uses organic batting (cotton or wool) and organic fabric, for which there are several choices.