18-24 month but fits a little bit so you can wear longer Gently used, sweetest top, light wash wear runs true to size and can easily wear a little beyond 2 years Relaxed fit long sleeve crewneck tee made from the softest cotton jersey fabric. Featuring a gentle curved hemline. Baby sizes 0-3m thru 18-24m have snaps at the shoulder for easy changing. Care: Machine wash cold. Tumble dry low. Made of 100% cotton