Rebar base and mid layers offer athletic styling and performance technology, engineered for the guys who get the work done. 5 oz durable cotton blend jersey Greater Arm Mobility seam construction Stain-release Wind and water resistant with breathability VentTEK technology features body mapping to enable air flow and regulate body temperature Reinforced pockets Screen print arm logo 60% cotton, 40% polyester Features Greater Arm Mobility for freedom of movement VentTEK technology enables airflow Wind and water resistant with breathability Screen printed arm logo Stain repellent Reinforced pockets