The product described is a 1999 Topps Record Numbers 10-card set featuring players such as Mark McGwire, Ken Griffey Jr, Mike Piazza, and Roger Clemens. These baseball trading cards are original and made of card stock, showcasing the players' stats and accomplishments from the 1999 season. The cards are in standard size and come in a parallel/variety insert set, making them a valuable addition for collectors of vintage baseball memorabilia. Made in the United States by Topps, these cards are a piece of baseball history that capture iconic moments from the MLB.