The Topps Holiday 2020 MLB Mega Box contains 10 packs of baseball trading cards from the 2020 season. Each box includes 1 autograph or relic card and 5 metallic holiday parallel cards. The oversized and standard-sized cards are made of card stock and metal materials. This box is part of the Major League Baseball (MLB) league and manufactured by Topps. It features rookie players and parallel cards, making it a must-have for baseball card collectors.