This Athletic Works Boys Thermal Underwear Set is perfect for your little adventurer. The black Camouflage pattern with colorful accents will make him feel cool while staying warm in the polyester and spandex material. The long johns and long sleeve shirt are machine washable and feature stretch and moisture-wicking technology to keep him comfortable during any activity. This set is size XL and fits boys ages 14-16. Get your boy ready for any outdoor adventure with this stylish and functional underwear set.