Youth Grindhouse Jersey - Atomic. The youth Grindhouse Series uses quality materials with a traditional cut. It is designed to endure endless weekends in the desert, yet is performance-driven enough to take you to the starting gate. Classic Fit - Regular torso and sleeves with a round ribbed collar. Moisture-wicking fabric to help keep you dry. 100% polyester. Mesh-vented sides and under-sleeves for airflow. Overlocked stitching for superior durability and longevity. High-quality silk-screened graphic on chest.