Personalized Radioactive Tree Circle Men's V-Neck T-Shirt. A tree made of radioactive symbols with a red and yellow glow in a colorful circle is a humorous Christmas design. Fun holiday gifts for college students, physicists, nuclear engineers and workers. 4.7 oz., 100% pre-shrunk cotton Narrow, set-in 1x1 mitered V-neck collar Shoulder-to-shoulder taping Double-needle stitched sleeves and bottom hem