Jersey is Adult size XL. I personally obtained this autograph recently in Pittsburgh before a Sabres game.
This jersey is JSA Authenticated and will come with a COA from JSA! The item "JACK EICHEL SIGNED BOSTON UNIVERSITY TERRIERS #9 NCAA HOCKEY JERSEY JSA COA" is in sale since Tuesday, March 14, 2017.This item is in the category "Sports Mem, Cards & Fan Shop\Autographs-Original\Hockey-NHL\Jerseys". The seller is "pirates2005" and is located in Saxonburg, Pennsylvania. This item can be shipped worldwide.