Acid free. I wanted them to store 8 x 10 photos. They are a little bit difficult to open but I have some arthritis so that is a contributing factor. Otherwise they’re fine.
I am happy with the weight and the fact they are non-glare. It gets a little tricky loading in the paper when you have several to do - static doesn’t make things easy but all in all I’m happy with the product.
The heavy wright clear plastic sheet protectors were a great investment. I made a family cookbook as a birthday gift and they completed the look i was going for. The clear sheets did not give off a shine while looking at recipes in the light so i know they will be a great addition for her while cooking from the recipes inside the sheets
These are the best I've found for saving articles and family documents. With that said I'm still searching for a truly HEAVY "heavyweight" sheet protector.