This is a Moomin insulated bag. I believe it was a magazine bonus. I opened it for the photos (it was in a cardboard box), but I've disposed of the box and will fold it up small for shipping. It's a bucket shape, approximately 22cm high x 32cm wide x 19cm deep. I've used a 2-liter plastic bottle for reference. The top sticks out a little, but it looks like it can hold a lot.