Personalized Right Spark T-Shirt. Electrical engineers have just the right spark with the k in spark emitting sparks is a humorous gift design for EE's and engineering students at back to school, birthdays, holidays and graduation. Electrical Engineer or college student in your life. 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.