Galvin Green Damon Insula Golf Jacket Platinum-White. 2014 Galvin Green Insula Golf Jackets for Men. This warm golf jacket is made using a thermal insulated fabric from Galvin Green which is soft & stretchy for maximum comfort on the golf course. This Insula golf jacket looks great in silver with white & green colour detail, whilst the soft fabrication also provides maximum breathability & complete warmth this season.