The Fly Boy's Ranky Roar Zip Up Footie with Dinos, Cowboys & Spaceships is a soft and breathable onesie suitable for kids. It is made of 95% Rayon and 5% Spandex. The footie is available in three sizes: 0-6M, 6-12M, and 12-18M. The measurements are: 20.5" (0-6M), 22.5" (6-12M), and 23.5" (12-18M) in length, and 7.5", 8.5", and 9" in chest circumference, respectively.