Hi flyingmukluk. Yes, augmented breasts can feel very natural, especially when a proportionate implant is placed underneath the muscle. There are several options of fill material that vary the way they feel ( saline, silicone that is responsive is softer than cohesive). The weight varies based upon the fill material and size. When you try on different sizers during your consultation, you will get to feel how light they really are. In my experience, patients have not developed back or neck pain after augmentation, like experienced by women who qualify for breast reduction surgery. Be sure to find a certified PS who can expand on these. Best wishes,