Non-toxic Padded play mat?

Ma

Does anyone have a recommendation for large padded floor mats that do not contain formamide or any other toxic chemicals? We have the Skip Hop foam floor tiles, which are made from EVA foam, but when I looked up what EVA foam is, it says it contains formamide which is carcinogenic and causes developmental issues!!! Pretty much the opposite of what I want for my baby! Any safe alternatives out there to put on my wood floors?