Personalized Bubbly Chemical Engineers Men's V-Neck T-Shirt. Chemical engineers are bubbly with bubbly text and a bubbling beaker is a humorous chemistry design. Fun engineering gifts for birthdays, holidays and graduation. 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