A super robust 20lt cooler bag, made from 600 denier polyester which looks like a high quality canvas but does not rot or mildew like canvas. There is a nifty feature on the top lid flap – 2 x Hook-and-Loop 120mm square doors. These give you access to standing up pre-packed bottles. You simply open the flap and pull the bottle out by the neck. It also has a separate zipped side bag for other items such as picnic plates, napkins, etc.