I took a while to find this one, decided to get one that was a higher quality then my previous £2 shopping bags that I had used in the past.
http://www.gooutdoors.co.uk/pac-15-p266444?gclid=CLO29u7w7r0CFZShtAodqm0AfQ
http://www.gooutdoors.co.uk/pac-15-p266444?gclid=CLO29u7w7r0CFZShtAodqm0AfQ