This "Light Weight" post mastectomy breast prosthesis or breast forms are made with the same SENTAC visco-elastic polymer gel that is used for the "Full Weight" breast prosthesis. The flat backs of the TEAR DROP shaped breast forms mold nicely to the chest wall configuration and are very comfortable when worn in post mastectomy bras. They have the same softness as the FULL WEIGHT breastform but with a weight reduction of more than 15%. The Light Weight post mastectomy breast forms are 100% SENTAC. NO FOAM or CELLULAR MATERIAL IS USED to achieve this weight reduction. They can be used in post mastectomy swimsuits and are safe in plain, clorinated and salt water. They have the same WARRANTY as the FULL WEIGHT breast forms.