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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For the angler who also loves science! A clever twist on Einstein's famous formula – because fishing IS a science. Funny, smart, and totally unique. ✅ Clever science + fishing humor combo ✅ Great conversation starter at any fishing spot ✅ Perfect gift for dads, professors, and science lovers ✅ Lightweight classic unisex fit 🔍 funny fishing science shirt, physics fishing tee, nerdy fisherman gift, Einstein fishing shirt, science humor tshirt