100% Cotton Pull On closure Machine Wash Show off your style in this great Carnegie Mellon Tartans Basic Block Long Sleeve Long Sleeve T Shirt! Underground Printing uses cutting edge technology to create the highest quality t shirts out there! We have thousands of designs! Check out our store for great items to wear around campus, at home, or on a night out on the town! We have a great selection ranging from official collegiate printed t shirts to funny novelty t shirts.