Smooth round silicone implants are the softest and most jiggly of implants. However, the jiggle and degree of softness also depends upon how much breast tissue you have and how large the implant you choose. If you have little breast tissue and choose a large implant, your now big ball breast will be hard and not jiggle.

Both silicone and saline implants have a silicone shell. It's what's inside that's different. Saline implants are filled with saline solution. They look, act, and feel like a bag of water. Silicone implants are more cohesive. They have a feel more like natural breast tissue. I've included a video I hope you find helpful.

Silicone implants have a more natural feel. There are also several different types of silicone that vary in firmness.

I recommend an in person consultation with a plastic surgeon to discuss your goals and be measured. After I measure and discuss goals with my patients, we then look at pictures of women (my patients) with similar measurements with different size and style breast implants, if interested, and they choose what looks right for them. They also get to see what they would look like when the breasts have fully dropped and fluffed and in clothes. You get to see actual results and the surgeon's experience and not a virtual idea of what can be achieved. Women tell me that this process is very helpful in determining what size and style breast implant is right for them. Dr. Ted Eisenberg, Board Certified Plastic Surgeon and Author. RealSelf Distinguished Hall of Fame Inductee. Philadelphia, Pa., USA

Being softer, more giggly or bouncier doesn’t really translate to a more natural implant feel. I believe this is what you are trying to ask. Silicone implants behave more like breast, therefore they feel and look more natural. A saline implant giggles more because it is basically water inside a silicone casing. It will behave similar to a balloon filled with water. Hope this answers your question, Dr. Miguel Mota