5 Bissell Zing Canister 7100 7100L Bags & 2 Filters, Part # 3210
Worked for me...
I have a Bissell Zing model 4122. I wanted to save money on bags, and I knew that these were not designed for the 4122, but I thought I could make them work. They are smaller than the original bags that came with my vacuum, and the paper is thinner. I had to cut the cardboard just slightly to fit it into the slot for my model, but it worked. I've been using one bag for a couple of weeks now with no problems. I recently checked and the bag expanded quite a bit and will probably last longer than I thought. While not perfect, I think these bags are worth it for they money I saved. The cheapest deal I could find for bags that were actually designed for my model was 3 for $12.