Personalized Intelligent Triangle Light Toddler T-Shirt. Triangle with the letter A in the word triangle replaced with a percussion triangle with text, the instrument for intelligent people, is a funny gift design with attitude for percussionists, music teachers and students in orchestra and concert band. A toddler-soft cotton tee in look-at-me, big kid colors. 4.5 oz., 100% combed ringspun cotton. White is sewn with 100% cotton thread. Topstitched rib crew neck. Double-needle stitched sleeves and bottom hem. Shoulder-to-shoulder taping.