Like new. Crafted from a New Zealand merino wool with a nylon core so you can toss it in the washing machine. As the ultimate travel t-shirt in our arsenal, it functions just as well as a merino wool base layer for adventures that call for packing light and staying comfortable. Even after three days of constant wear, the 72-Hour T-Shirt still pass the smell test thanks to the naturally odor-resistant and moisture-wicking properties of merino wool.