Black Gray: 100% cotton (with Trace Amounts of Regenerated Cellulose Fiber)
Denim Blue: 75.5% cotton, 15.3% regenerated cellulose fiber, 9.2% polyester (with Trace Amounts of Other Fibers)
Black Gray 2: 91.9% cotton, 5.2% polyester, 2.9% other fibers
Denim Blue 2: 92.3% cotton, 7.7% other fibers