Celebrate Cummins, These shirts are printed on our cotton polyester blend Next Level shirts that ensure maximum durability, style, and comfort. Perfect for wrenching in the garage, or a night out on the town. They are true to size and have minimal shrinkage in the wash, If you're between sizes definitely order the bigger of the two. In addition the shirts are super breathable and moisture wicking, they're our favorite shirts to wear and we bet they'll be your favorite too! All sales are final, official merch offered exclusively on Fullsenddiesel.com.