Santa Claus Conquers the Martians Long Sleeve T-Shirt! Attention MST3K and RiffTrax fans! This is the long sleeve shirt you've been waiting for all these years. The definitive Christmas movie poster is now available on a quality cotton long sleeve 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 100% cotton jersey long sleeve T-Shirt. Available in red or asphalt and offered in most adult sizes. Click here for a similar option in a short sleeve style. We offer a money back guarantee if you aren't fully satisfied.