RageOn Men's Bert and Ernie Tank Top This All Over Print design is made with high-quality, 100% spun polyester that delivers the look and feel of organic cotton without ever fading, cracking, peeling or flaking The back of each design is the same as the front, so people will be able to accurately double take your awesome shirt and confirm their jealousy of you! We print our shirts using dye-sublimation, a technology that allows us to produce these insanely vibrant all-over-print designs. Due to this process, the product may contain smudges or irregularities under the armpit of the sleeves