This bag is large. It held for me a 3 pound bag of frozen fruit. 1 and 1/2 pound bag of frozen chicken strips. 1/2 gallon of milk. 2 pound block of cheese. Two packages of 5 each Italian sausages (about 6 inch length).  Large container of Cottage Cheese and Large Container of Sour Cream. It fully zippered up. I waited outside in 80f -90f weather for about an hour or more, plus 30 minute ride home.
Everything was still nice and cold. The frozen fruit still had ice crystals on the outside of the plastic bag. Thumbs up for this purchase. Handles nice and long. Very sturdy with an inset bottom, Silver insulated lining inside. Nice big zipper.