At first glance, a hole in the top of a pen cap seems pointless. But did you know that this tiny detail could actually save lives? Many people never think twice about it, yet it’s one of the smartest safety designs hidden in everyday objects.
It’s a Life-Saving Feature
The main reason pen caps have holes is to reduce the risk of choking. If someone, especially a child, accidentally swallows a pen cap, the hole allows air to pass through. This provides a small passage for breathing until help can arrive, potentially saving a life. It’s a tiny feature, but it carries a huge impact.
It Complies With International Safety Standards
Adding holes in pen caps is not just a random decision by manufacturers. Organizations like the International Organization for Standardization (ISO) require this feature to meet global safety standards. Most leading brands follow these regulations to ensure their products are safe, particularly when children are around.
It Helps Prevent Ink Drying Out
Besides safety, the hole also has a second, less-known purpose. It allows a small amount of air to circulate inside the cap, balancing the internal pressure. This airflow can help prevent the pen’s ink from drying out too quickly, ensuring that your pen lasts longer and writes smoothly every time.
