Callaway Golf Wear Mock Neck Shirt Green (darker color than in the photo) Size M This mock neck shirt uses "Kazana Mesh," a material with ventilation holes for improved airflow. It's a functional material that allows air to pass through, making you feel cooler. Only tried on, never used. I think it's in good condition, but I will sell it to someone who understands that it is a used item and has been stored at home. m(_ _)m