This black t-shirt features a graphic design that resembles a sound mixing console. Above the graphic, the text "I KNOW" is printed in white, followed by "WHAT ALL THE" and "BUTTONS DO" below. This tee is perfect for sound engineers, music producers, or anyone who loves working with audio equipment. Show off your audio expertise with this unique design! Comfortable and stylish, this shirt makes a great conversation starter and a fun addition to any casual wardrobe.