Sistema® Klip It Soup Mug 900ml 2 "It leaks!" Mrs Piggott 08 February 2017 Thought that this cup would be ideal to take home made soup to work but sadly it leaked into my work bag A note from the team Thanks for placing your review. We're sorry you've been disappointed with the soup mug. The mug does have a tight seal clip on lid and we would recommend keeping the mug upright if you're transporting it's content's. The steam vet isn't a tight seal. This needs to be opened when heating in the microwave to release the steam. Please return the mug back to your local Lakeland if this isn't going to be suitable for your needs. Our colleagues will be happy to help on your return. Don't forget to take along your receipt, bank or card statement as proof of purchase.