The Pokemon Mega Evolution Booster Pack One is a sealed pack from the Pokémon League convention event, featuring cards from the Evolutions set. This pack includes 10+ cards made of card stock, standard size, and illustrated by The Pokémon Company Art-team. The pack is authenticated by Beckett Authentication Services (BAS) and graded by Professional Sports Authenticator (PSA) with a grade of 10, suitable for ages 6 and up. Each pack also comes with a Booster feature and is manufactured by MEGA.