Personalized My Great Grandpa is a Vietnam Veteran Adult Sweatshirt. Show your serving family your support on Veterans Day in our My Great Grandpa is a Vietnam Veteran Adult Sweatshirt - Black. Stay warm and stylish with this classic adult sweatshirt, perfect for everyday comfort. Crafted from soft, durable fabric, it features a relaxed fit for added coziness. Whether you’re lounging at home, running errands, or enjoying outdoor activities, this versatile sweatshirt is a wardrobe essential for any season.