Stretch & Sew 1320; ©1978 & ©1979 (reissue); Tank Suit. The Tank Suit is a fitted one-piece swimsuit with shoulder straps, bust darts and center front and center back seams. View A features bra cups and crotch lining and View B has a full front lining without bra cups. Elastic finishes the neck, armhole and leg openings.