Layer up and look great in this Tommy Bahama Islandzone Coolside Half Zip Sweater in Bala Shark. This Islandzone Coolside Half Zip Sweater by Tommy Bahama features ecomade coolmax combed cotton polyester heather, long sleeve half zip with two-tone stitch on body, solid trims at collar, cuffs and hem. This Tommy Bahama Islandzone Coolside Half Zip Sweater is made of 60% Cotton, 40% CoolmaxEcomade polyester.