This is an eco-bag with a simple cooling function made by Tachikichi. It measures 31.5 x 39cm when laid flat, and seems easy to use as it's integrated with a cover. It's well-made. New, unused item Thank you for viewing. The item is in "new, unused" condition. I am selling it because I no longer plan to use it. Please refrain from purchasing if you are concerned about minor scratches from storage. Thank you for your consideration.