Personalized Nuts, Bolts, Angles and Gray Steel Beams Adult Hoodie Sweatshirt. A pattern of steel I-beams, channels, angles and nuts and bolts is a unique gift design for construction workers, structural and civil engineers and steel detailers and drafters at birthdays, holidays and graduation. Elevate your comfort with this classic adult hoodie, a perfect blend of style and practicality. Crafted from soft, high-quality fabric, it features an adjustable drawstring hood, and a spacious front pocket. Ideal for layering or wearing on its own, this hoodie is a versatile staple for casual outings, workouts, or relaxing at home.