Well I purchased this item in a medium size two days before my 8 year old son was to wear it to school for their Halloween class party. Last minute he changed his mind from Buzz to Scooby! Kids :) So I went online and he loved this one. Shipped it for next day delivery and when it arrived I had him try it on..... The package stated it was a medium, however, the measurements were all wrong! I checked online and measured it myself and wouldn't you believe that the measurements were exact for a size small! So here I have a size small Scooby costume with size medium tags on it! Aside from the wrong measurements, the costume is nice and cute.... He went as Buzz after all and had a great time, but I will not purchase a costume online again.