100% cotton (fiber content may vary for different colors). Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; Dark Heather and Heather Blue: 50% Cotton, 50% Polyester; OR Dark Heather, Heather Blue and All Other Heathers: 65% Polyester, 35% Cotton; Girls' Heathers: 60% Cotton, 40% Polyester.
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