Friends I'm not in the habit of promoting products, but this one's pretty cool. It's an "Origami Wine Tote" bag that collapses along pre-set creases when you twist it to save space. Here's a video showing how it collapses: https://www.youtube.com/watch?v=pU7BqJGKQr0 It's designed by a company called BuiltNY, and comes in 5 different colors. Cost is $25 from them, or less from Amazon, which only offers the item in black. Joel