Magnum condoms and other condoms marketed as larger than your average rubber have huge appeal. (Pun entirely intended.)

Between 2001 and 2010, Magnum sales grew over 14 percent. By the start of this decade, Magnums made up 18.8 percent of overall condom sales in the U.S. (not including Wal-Mart).

You have to wonder, though: Are there really that many well-endowed dudes who need to go big when it comes to protection? Are average-sized men buying them for an ego boost? And how much larger are they than regular condoms?

Below, the answers to those questions and more.

What size does your penis have to be to fit into a Magnum condom?

Magnum condoms are slightly larger than the standard Trojan condom. According to Condom Depot , Magnums measure 8.12 inches long with a width of 2.12 inches. By comparison, Trojans standard ENZ condom measures 7.62 inches long and 2 inches wide.

Then, theres Magnums even longer big brother, the Magnum XL, which measures 8.37 inches long and 2 inches wide.

Which one is the best fit for you? The only way to find out is to sample a variety of condoms on your own, said Stephanie Berez, the group brand manager for Trojan. (By on your own, we mean while masturbating; its not a good idea to try out a new, possibly too large or small condom with a partner.)

The Magnum consumer generally prefers larger condoms for comfort, but its really about finding the condom thats right for you, Berez told HuffPost. You want the most satisfying experience for you and your partner.