The Packers Mens Clay Matthews Sackmaster T-Shirt is a must for every Matthews fan! This green t-shirt by Reebok features a graphic of Clay Matthews, his name, number, signature and the Green Bay Packers logo on the front. Officially licensed NFL apparel. Available in men's sizes. 100 percent cotton. The Packers Mens Clay Matthews Sackmaster T-Shirt is the perfect gift for any Packer fan!