A Must Have Style for Roaming Around the Islands, This Tommy Bahama Islandzone Casa Grande Camp Shirt in Dark Blue Muse. This Islandzone Casa Grande Camp Shirt By Tommy Bahama Features Printed Silk, Coolmax Ecomade Polyester Calida Jacquard Short Sleeve Bungalow Collar with Rounded Pocket and Straight Hem. This Tommy Bahama Islandzone Casa Grande Camp Shirt is Made of 70% Silk, 30% Coolmax Ecomade Polyester.