3L Colour Match Lidded Food Storage Container 3 "My 3-Litre Matching Colour Lidded Food Storage Containers" Mr Canning 19 April 2018 The seals are not particularly strong and have come open when placed in a large bag or rucksack. The container is big enough for a typical lunch I will eat, that is, two sandwiches, one pear, one apple, dried fruit, a half banana and two sandwiches. A note from the team Thank you for placing your review. I'm sorry the seal has proved unsuccessful when used as a lunch box. From experience I use the locking boxes and our Lock and Lock 3L container (13788) would be ideal as a lunch box for transporting.