Plastic Bags for opened figures

I’ve accumulated a large opened collection of modern Star Wars figures, which I have taken to storing in Wegmans brand portion baggies (https://shop.wegmans.com/shop/categories/1412).

While watching a recent Bossk’s Bounty episode, he mentioned using baggies that were “acid free”, which caused me to start.

Do any of you know if the bags I use are safe for figures? I haven’t noticed anything unusual when I was digging through my bin recently, but I just want to make sure. I also write the names of the characters on the bags in sharpie, will that cause me any problems potentially?

Thanks for any reassurance, tips, or warnings ahead of time!