USA Shamrock Distress on front and full-color USA Shamrock Distress on back of Comfort Colors T-Shirt offered in Alpine Green, Black, Mint, Blue Moon, White, Yellow, & Cement Grey. 4.2-ounce, 100% Airlume combed and ring spun cotton. This ultra soft and lightweight cotton shirt is the perfect option for everyday wear, offering a comfortable and relaxed fit that keeps you feeling cool even in warm weather!