We were have trouble with having rips in the side (sometimes right on the "seam") and also the plastic ripping away from the elastic. I discovered it works just fine to sew them on the sewing machine. For the ripped sides I just put the two right sides together and took a narrow straight stitch seam. For the elastic problem I pulled the elastic out until it was as big as the plastic part and then using a zig-zap stitch I sewed them together. If it doesn't make sense from what I have written, maybe the picture will. If you have questions, feel free to ask in the comments.
I am glad to be able to avoid buying something else, especially as we hope to have Megan potty trained and all done with them before long anyway. I also thought about using a plastic bag and an iron and mending ripped places that way but I haven't. Has anybody else tried that?
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