Most Mars shirts are made from a 50% cotton / 50% polyester blend; at least one listing is 100% cotton.
Most listings describe Mars shirts as a loose fit with short sleeves; one listing notes a classic fit. They are pullover short-sleeve styles.
Care instructions vary by listing but generally recommend machine washing. Many suggest line drying or laying flat to dry; some descriptions state machine wash cold inside out and tumble dry low. For best results, listings recommend hang-drying when possible.
Designs use outer-space and pop-culture themes and can include short planet facts. Listings mention facts about Mars, Jupiter, Earth, Saturn, Mercury, Neptune, Venus, and Uranus and feature phrases like “Adventure Awaits.”
Many options include big and big-and-tall sizes. Titles and bullets list Mens Big, Mens Big and Tall, and Big Tall variants up to 5X.