Simplicity 9651; ©1971; Boys' Jacket, Pants and Reversible Vest: The pants with fly front zipper closing and optional suspenders have front waistband and back elastic waistline casing. The vest and jacket with "V" shaped neckline have front button closing and optional top-stitching. The collarless Jacket with long set-in sleeves and welt pockets is lined. The vest is reversible.