Personalized Nuts and Bolts Pumpkin Adult Sweatshirt. A pumpkin face made up of nuts and bolts is a humorous gift design for mechanics and structural engineers at Halloween and birthdays. 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.