It's ultra soft and squishy, and it doesn't feel weird for the guy. I prefer it with the rounded side towards me, instead of the "link" side as shown in all the vague instructional pictures, it helps with more with motion-related tearing during rough sex.
I have a history of sexual assault and my partner prefers rougher & deeper sex, which isn't always the best combination. Painful cervical pounding during sex has always been kind of a trigger for me and this thing prevents that. Just makes everything way less stressful for both of us knowing that he won't go too deep and I won't panic about it.
I recommend putting however many links you want together first, then applying lube and putting it oh. Helps them stick together. I prefer a water-based lube so that they just take a quick rinse to clean off later.
This should be standard-issue at college clinics, right next to the condoms!