- WHBM FORME™ Ribbed Stretch Tank - Color: Bright Blue (model photos to show fit) - Perfect condition WHBM FORME™ has softened the iconic tank top by designing a version in our ribbed fabric that stretches and smooths your body, offering a flattering silhouette. Fitted for wear on its own or as a layering piece. 97% Nylon, 3% Spandex. Machine wash cold.