Personalized Mechanic Nuts and Bolts Toddler Full Zip Hooded Jacket. Mechanic Nuts and Bolts Toddler Full Zip Hooded Jacket - Black, underlined with a wrench and bedecked in nuts and bolts, are a unique gift design for professional and weekend mechanics! 7.5 oz., 60/40 cotton/polyester. Jersey-lined double-needle hemmed hood. Pouch pockets for all their treasures. Coverstitched shoulders and armholes. Coverstitched rib waistband and cuffs.