I have no idea where I saw them, but I bought 4 of these and they are the most comfortable folding chair I've ever sat in. https://smile.amazon.com/gp/product/

I have no idea where I saw them, but I bought 4 of these and they are the most comfortable folding chair I've ever sat in. https://smile.amazon.com/gp/product/B005PJ0VJQ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 https://smile.amazon.com/gp/product/B005PJ0VJQ/ref=ppx_yo_dt... Definitely made of plastic.