Most people will never know. Full article 👇 💬

**Why Pen Caps Have Holes: A Clever Design You Might Overlook**

Pen caps aren’t just there to protect the tip—they’re carefully designed with tiny holes for important reasons.

**Safety First:**
The hole helps prevent choking by allowing air to pass through if the cap is accidentally swallowed.

**Better Ink Flow:**
It helps equalize pressure inside the pen, preventing leaks and keeping the ink flowing smoothly.

**Cheaper Manufacturing:**
The hole reduces material use and speeds up production, saving costs when making millions of caps.

**Stylish Design:**
Some brands use the hole as a design feature to make their pens more recognizable.

Next time you see a pen cap, you’ll know—it’s not just a random hole, but smart, thoughtful engineering!