A liter Nalgene bottle fits perfectly into this, but I don't carry my bottles in bags. It's too deep for a day bag. If I knew anyone who drinks wine, I would give them a bottle in this bag, but I don't. It will probably end up at Goodwill, but I'm worried they would throw it away. We don't have any thrift stores that take unusual things.
For now, the sleeve bag sits in a drawer waiting for a purpose. If someone wanted it, I would be happy to send it to a useful home.
Blue T-Shirt Bag
Because of the kind of sleeves on this shirt, I didn't cut off the sleeves like ReFashionista did. I also had to stitch over the sleeve seam where I cut off the neckband to keep the sleeve seam from unravelling.
This shirt is more stretchy than a normal "event" t-shirt and my preference is for bags with a flat bottom, but I think it will work for groceries. To take the picture, I put a hammer and a partly used quart bottle of vinegar in it. You can see how stretchy the bag is, but at least the shirt isn't languishing in that place of too old to wear, too used to donate.