Santa Claus Conquers the Martians T-Shirt! Attention MST3K and RiffTrax fans! This is the shirt you've been waiting for all these years. The definitive Christmas movie poster is now available on a quality cotton tee. Makes a great gift! At the next office party, toss your ugly sweater and wear this instead. Shirt is printed in rich, corinthian color on a durable Gildan Ultracotton T-Shirt. Available in three colors and most adult sizes. We offer a money back guarantee if you aren't fully satisfied.