The House of Staunton Regulation Vinyl Tournament Chess Board - 2.5" - Green by US Chess Federation Manufactured out of high-grade vinyl, designed to resist tears, spills and the most demanding of abuse. Measures 24" x 24" with 2.5" Squares and features the Rank/File Labels Perfect for Youth, Scholastic, and Tournament Chess Players Manufactured Exclusively by the United States Chess Federation (USCF)