I'm So Sleepy and I'm Not Sleepy Dad and Me Matching Set T-Shirt Bodysuit Clothing 100% Pre-Shrunk Cotton Dad and Me I'm So Sleepy and I'm Not Sleepy Matching T-Shirt/Bodysuit Set Sizez NB-24 mo are Baby Bodysuits, and sizes 2T, 3T, & 4T are Toddler T-shirts Printed with waterbased eco friendly inks providing great durability! Makes a great gift for Father's Day, Christmas, New Baby, or just for a really awesome photo opportunity! Check the sizing chart image for measurements