Video here. NSFW. Didn't see a thread anywhere.
In addition to being stretchier and more flexible than latex, silicone is more effective at blocking viruses and bacteria. This video compares a recent prototype with traditional condoms, showing how internal lubrication allows it to be slipped on much faster with no unrolling required. Its fluid lining is supposed to mimic the vaginal environment, simulating sex without a condom for a man. Ridges on its surface are meant to enhance the experience, making it double as a sex toy.