The Caterpillar Medium Dark Heather Gray Long Sleeve Trademark T-shirt is a great choice for any occasion. It is made of 6 ounce 100% ring-spun combed jersey cotton that is soft and comfortable. It features an inside the neckline rib trim, blended with spandex, to help maintain the shape of the crew neck. Caterpillar also included a tag-less neck label for additional comfort.