Size is 12m-24m, but it can be worn for a relatively long time because it fastens with Velcro on the chin and back. My almost 100cm tall 4-year-old could wear it too♪ (Although the tail position doesn't quite fit.) The dinosaur face hat and body are easy to put on, just slip them on from the bottom. It's very cute, so how about it for Halloween or something? (^^) Still in good condition and can be worn for a while. 1 year old 2 years old 3 years old 80cm 90cm 100cm Halloween Kids Pottery Barn Gymboree Next Cosplay Costume Kigurumi (animal costume)