Galvin Green Damon Insula Golf Jacket Midnight-Swedish Blue. Galvin Green Insula Golf Jackets for 2014. This Insula full zip golf jacket is an all new style from Galvin Green & uses thermal technology to provide total warmth, comfort & breathability & is also soft & stretchy for a great wear on the golf course. Finished in midnight & Swedish blue, this golf jacket looks great & is a perfect mid layer for this season.