My son is huge. 5 months, 21lbs and wearing a size 18month. Everything he has is 18-24 and since his head is off the charts I figured this size would work, not so much. I even measured but this hat is way too big. He will grow into it, but for now its too big for his massive head for his age. go figure!

Its very cute red and white stripe beanie. Washes up great