The soft, ring-spun cotton of this t-shirt is also long-lasting. With a classic fit and seam-free body, you'll want to wear it every day. 100% soft ring-spun cotton (Sport Gray is 90% ring-spun cotton, 10% polyester; Dark/Navy Heather is 65% polyester, 35% cotton.) Modern classic fit Tubular body Double-needle sleeve and bottom hems Taped neck and shoulders Ribbed collar Wash cool, hang dry or tumble dry low Cool iron inside-out

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Celebrate a funny science-loving dad with this clever “I TELL DAD JOKES PERIODICALLY” design. Featuring periodic-table-inspired blocks spelling “JOKES,” this design combines chemistry humor, dad jokes, and geeky science style. Perfect for dads, chemistry teachers, science teachers, engineers, STEM lovers, and anyone known for delivering classic dad jokes. Great for Father’s Day, birthdays, school events, or everyday wear.