We got this for my son for Halloween this year. My son is almost 2, about 24lb and it fit him pretty well except for the helmet. The helmet was too big for even me and I'm a 200+lb adult male. Unfortunately there was a huge problem with the way this outfit was designed around the neck. There's a thin very sharp piece of plastic that goes around the entire neck that the foam is supposed to protect your child from but it does a pathetic job. My son fell once while wearing the outfit and the sharp plastic above the eyeball cut up his neck and underneath his little chin. After putting some bandages under his chin we had to put tape all over sharp plastic edge before we could continue trick or treating. It's really a cute outfit and we got some great pictures but it's stupidly designed and dangerous right out of the box for kids to wear.