Guerrilla Tees Check engine light funny automotive mechanic jdm car shirt Black We stand behind all of our products. If you have any issues with your order please contact us and we will issue a refund, or replace your product free of charge. We have something for everyone. Check out our entire collection ranging from Car and racing tshirts, to funny Dungeons and Dragons and gaming tshirts. Preshrunk 4.2 oz ring-spun Guerrilla Tees brand shirts Solid colors are 100% cotton, heather tees are a 50/50 cotton poly blend. Unsure of sizing? Our shirts are a fashion fit cut so we always recommend you order the next size up