Batch 1 (Blue): 92.5% cotton, 4.5% polyester, 3% other fibers; (Black): 74.7% cotton, 17.5% polyester, 6.8% regenerated cellulose fiber, 1% other fibers; Batch 2 (Blue): 91.3% cotton, 5.3% polyester, 3.4% other fibers; (Black): 96.3% cotton, 2.5% polyester, 1.2% other fibers; Batch 3 (Blue/Black): 82% cotton, 15% Recycled Fiber, 3% other fibers; Batch 4 (Blue): 85% cotton, 15% polyester