[LEAKPROOF]: Your future lunch box “Blockhütte's big treasure chest” is leak-proof in all situations in life, whether at university, in the office, or during sports. This is thanks to the improved seal, which has been tested several times. - Expiration was yesterday! [FREE GIFT]: In addition to your stainless steel lunch box, you will receive another replaceable sealing ring for FREE. On top of that, you get a fabulous RECIPE BOOK in a handy e-book format with lots of delicious dishes - by e-mail! [PROTECTS THE ENVIRONMENT]: You save valuable resources thanks to the reusability of the environmentally friendly lunch box with compartments.