May Your Birthday Be Tardi-Great!

Tardigrades, or water bears, have a lot to celebrate: sure, they can only be seen under a microscope, but they can also survive under even the harshest conditions, like in the frozen Antarctic and in the vacuum of space! So when someone wishes you to have a Tardi-GREAT birthday, well - that's pretty darn great.

Cards are size A2, or 5.5 x 4 inches when folded. Comes with a self-sealing envelope.