Good Luck Sock offers a huge variety of popular, fun, and modern designs. Reinforced heel & toe for better durability and just the right amount of stretch for all-day comfort. Good Luck Undies are the ultimate everyday essential. With breathable, moisture-wicking modal-viscose blend fabric and a comfortable fit, there's no pinching, sagging, or adjusting. Just simple underwear that will leave you feeling (and looking) good.