35% Lighter than traditional silicone. Features a new lightweight silicone that is softer than ever before! This improved softness offers a very relaxed drape, and imitates mature breast tissue. It moves and relaxes in just the same way as a woman's body. Adjusts to body temperature so it always feels like a part of you. Hollow back to fit various types of surgery. Properly weighted to restore body balance. Tapered edges for smoothness under clothing. Not affected by chlorine or salt water. Hand wash in lukewarm water with mild soap, towel dry. Comes with a fitted cotton/spandex cover. Additional covers available.