How do condoms affect the sensitivity during sex?

Rubber condoms are thick so sensation for the man wearing it is dulled. They also block heat flow, which is apparently an important stimulator for the penis. They have the advantage of slowing male orgasm which is good for the partner.

More expensive non-latex condoms are thinner, transmit heat better and can be used with all kinds of lubricants. And of course, are much more expensive.