Electrolux S-bag I bought was all paper/cardboard including around the hole. They have a plastic opening area. Cardboard worked better than these plastic ones, which I find brittle, and I don't think we need more plastic in our world either. Yes it still fits my vacuum cleaner but in my opinion it is not of the same quality as the paper/cardboard models. I will try to find all the papers in the future if I can.
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