Leo looked at his notes. He was a solid 5 inches. He looked at the "Standard" box. It was a match. But then, a final tip caught his eye: Brand matters. Some latex brands felt tighter than non-latex (polyisoprene) ones.

He pulled out his phone, ducking behind a display of discounted lozenges. He felt like a secret agent decoding a transmission, but he was actually just googling "condom size chart."

Leo didn't want a ghost. He also didn't want to lose circulation.

The first rule of the "Golden Rule of Fit" popped up:

Leo blinked. All those years of locker room anxiety, and it turned out the horizontal measurement was the one that actually mattered for safety. Most condoms are long enough for anyone, but the width—the "nominal width" printed in tiny numbers on the back of the box—dictated whether it would stay on or snap.

Look for "Snug" or "Iron Grip" styles (Nominal width: 47mm–49mm).

You’re the "Standard" king (Nominal width: 52mm–54mm).

As he walked to the counter, the cashier didn't even look up from her scanner. She didn't care about his circumference. She just cared that he was paying. Leo realized then that the "right size" wasn't about ego; it was just about the math of not having a very awkward conversation nine months from now.