Amoena 397 Natura 3E Silicone Breast Form w/Comfort + temperature-equalizing material is integrated into each form and 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. Features a back layer of firmer reduced-weight silicone that fully support the stand silicone front layer without the added weight. This is an asymmetrical form. Choose right or left breast. It is a full profile fit. Available sizes are 1-14 (See Amoena Sizing Chart).