Make sure to pull both cups, both lids and both straws out of the box.
Inspect everything to make sure there is no damage.
If you do find damage, go to cupkin.com/help
and we'll get you taken care of ASAP!
Now flip the cups over. Do you see 1 or 2 small holes?
These are vent holes caused by the melting of the glass beads to create the vacuum-seal.
Don't worry! Water can't get inside because it's sealed by the melted glass.
Your cups are stackable so if you ever get a black ring around one of the cups from stacking, use a Mr. Clean Magic Eraser to get rid of the black ring.
If you have any questions about caring for your cups, let us know!