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 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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Add some math humor to your wardrobe with this hilarious "I Got 99 Problems But √(-1) Ain’t One" t-shirt! 😄 Perfect for math teachers, students, engineers, or anyone who loves geeky jokes, this shirt combines smart humor with a cool vintage typography style. Whether you’re teaching, studying, or just showing your love for numbers, this funny math shirt will definitely get people smiling. It’s a great gift idea for Pi Day, graduation, birthdays, or back-to-school season. ✅ Features: Premium quality cotton for comfort and durability Unique distressed design style Perfect for math fans, teachers & STEM lovers Printed with high-quality inks