Amoena 396 Natura 1S Silicone Breast Form w/Comfort + replaced the discontinued Amoena 663 Natura 1S with Comfort+. Temperature-equalizing material is integrated into each breast form this helps to absorb heat and reduce perspiration behind the form keeping a woman comfortable all day. Ultra soft front layer provides a more natural feeling and appearance the back features a back layer of firmer reduced-weight silicone that fully support the standard silicone front layer. Symmetrical form fits both right and left breasts. This is a shallow profile fit. Available sizes are 1-14 (See Amoena Sizing Chart). For a breast form cover Order Amoena 343.