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People will make this too complicated – there is an easy way to fix this. Most waistbands are a folded-over fabric, essentially a tube around the I was an accident shirt besides I will buy this bottom of the hoodie. You just need to cut open that tube (from the interior side, so it won’t show) and insert elastic cut-to-fit, to reinforce the memory and size of the waistband. I suggest a 1.5 – 2″ wide elastic band, so it supports most of the width of the waistband, not just a narrow band of support. Find a finishing thread that’s close in color to the hoodie, and sew the elastic to the zipper on each side, or connect the elastic at the side-seams if the garment is constructed that way.
Enough of them together could be used as a hot water cylinder insulation jacket especially if you made a rigid outer container and stuffed them down between it and the I was an accident shirt besides I will buy this cylinder. Otherwise you could unpick the seams and use the material for making another garment, perhaps a warm bikini or the like. A hoodie made of purely natural fibres (for example cotton) could be cut down into narrow strips and composted. Wool is best as it is high in nitrogen but cotton would add useful bulk to the soil. In either case it would take at least two years to rot down sufficiently.
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