The mask fits my 5 year old very strangely. Even after adjusting the straps several times, the eyepiece cuts into his eyes so hard he can't see. The top strap is oddly placed and almost impossible to wear. We removed the top strap and it helps some but still feels weird. I wanted to love it but I can't. My son loves it even though his face hurts. His head is smaller too, so there's no reason it wouldn't fit.