Personalized Intelligent Flute Dark Products T-Shirt. Flute, the instrument for intelligent people is a humorous design for flute musicians, teachers and student. Fun gifts for birthdays, holidays, back to school and graduation. Everyone loves our Custom T-Shirts! Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.