The box is of excellent construction and truly airtight. Unfortunately, it is too small. Make sure to carefully check the dimensions before purchasing (unlike me) and take into consideration that in order to achieve a seal, you will need to subtract 2 inches from the height - that's how much the lid needs to fit inside and seal. Lastly, it is really overpriced for its size. If you truly need it, buy a larger size because this one practically fits nothing.