Which condom is the thinnest?

Many times when people ask this question they really mean, "Which condom transmits heat and sensation the most effectively?" The answer to that question is the polyurethane condoms (Avanti and Trojan Supra). If you really want to know which of the latex condoms is the thinnest, in terms of actual size, the answer is Crown (.046 mm thick), followed by Kimono Microthin (.05 mm thick), followed by Beyond Seven Regular (also .05 mm thick).