The blood-red background features illustrations of an anatomical heart and black-lettered medical text

Each 4-pack contains four different covers:

did you think humans were number one

Use this softcover notebook to study for your biology exam

or you can flip it around and wear it with the pattern on the outside for all the world to see

Sol: Spectra Hardcover Notebook - Lined/Grid Weekly Planner The blood-red background features illustrationsThis notebook celebrates the sun and its electromagnetic emissions that power all life on earth. Use it to catalog your adventures on one trip around our star, take notes in physics lecture, or record data in the lab.