J. Crew Crewcuts Ludlow Boy's Black Velvet Blazer Party Jacket Holidays - Size 16. Blazer is in excellent condition and has a classic look and style. Two buttons up the front and 3 matching cuff buttons. Velvet blazer is made out of 97% cotton and 3% elastane and is is fully-lined. Arms measure 25.5 inches in length (measuring from shoulder seam to the end of the sleeve) and the jacket measures 17.5 inches across from shoulder seam to shoulder seam. Jacket measures 27.5 inches in length. Two back vents.