Each box will stay fresh until the printed expiration date on the bottom of the box (if you can keep yourself from drinking it), whether the box is open or not. Air and light are the twin enemies of coffee -- they’ll make it go stale very quickly. We package our coffee to keep out air and light stay so your coffee stays fresh!
For the "coffee on tap" boxes, the coffee will not go stale, even after you open, because the bag and tap will keep air out.
For our single serve "coffee on the go" boxes, please enjoy within a week after opening.