Ever wondered why plastic stools have a hole in the centre? Here’s what this small design feature actually does

Look closely at almost any plastic stool and you will spot a small circular hole in the centre of the seat. It is such a common feature that most people rarely stop to think about why it is there. However, the hole is not simply a decorative design element. This small opening serves several practical purposes, from making stools easier to stack and carry to helping water drain away.

Makes Stacking And Unstacking Easier

Most plastic stools are designed to be stackable, allowing several stools to fit into one another and save space. But when smooth plastic surfaces sit tightly together, they can trap air and create a vacuum-like effect, making the stools difficult to separate. The small hole allows air to enter and escape, reducing the suction between the stools. This makes stacking and unstacking much easier, particularly in homes, shops, event venues and other places where several stools are stored together.


The Hole Works As A Handle

The opening in the centre can also serve as a simple handle. Instead of grabbing the stool from its edge, you can place your fingers through the hole and lift it more comfortably. Because the opening is located near the centre, it can also provide a more balanced grip when carrying or moving the stool from one place to another.

Helps Water Drain Away

Plastic stools are often used outdoors, in bathrooms and other places where they may come into contact with water. Without an opening, rainwater or water from cleaning could remain pooled on the seat. The hole provides a simple drainage point, allowing water to flow away instead of collecting on the surface. This can help keep the stool drier and reduce the chances of it becoming slippery after getting wet.

Uses Less Plastic

The hole also means that slightly less plastic is required to manufacture each stool. While the amount saved on a single stool is small, the reduction can become significant when thousands or millions of stools are produced. Using less material can help make the stool lighter and can also reduce manufacturing costs when producing them at large scale.