Trulife 471 SILK triangle breast form is a versatile triangle silicone breast form that fits a variety of body types. Works well with both underwire and softcup bras. SILK defines what a breast form should be; soft and natural. A new innovative skin is silky-soft and offers unparrallel softness and suppleness. All SILK forms offer a natural drape not found with other breast forms. Natural colored pigment produces a color that blends well with various skin tones. Fit: Shallow to average. Sizes: 1-17.