Galvin green mike polo shirts the mike polo shirt stylish contemporary design with 20 uv protection and galvin greens ventil 8 plus cool layering system ventil 8 is the material behind galvin greens multi layer idea it is extremely breathable and has ultra high moisture wicking properties the fabric also benefits from the fact that it is low maintenance no ironing is needed after washing and the fabric has anti bacterial properties for a constant fresh feel the shirts come in five colour