The TriNature SoftLite lightweight breast form bilateral can be worn on both sides. SoftLite 1051X features: Reduced weight full breast form. Very soft due to SoftLite silicone. Flex-Gap technology for natural movement and shaping of the breast form when lying down. Sizes: 1/60 | 2/65 | 3/70 | 4/75 | 5/80 | 6/85 | 7/90 | 8/95 | 9/100 | 10/105 | 11/110 | 12/115 .