The 2021 Topps Baseball Card Factory Sealed Set includes a total of 660 cards featuring MLB players from various teams. Each box contains cards made of durable card stock material, with different limited sets of cards numbered at 299, 99, and 1. Manufactured by Topps in the United States, this set is a must-have for baseball card collectors looking to add to their collection for the 2021 season. Each card is in standard size and comes from the Major League Baseball league.