Why Do Backpacks Have a Diamond-Shaped Patch？

Have you ever noticed the small diamond-shaped patch on many backpacks and wondered what it’s actually for? 🎒 At first glance, it might look like a simple design choice—but that little detail has a surprisingly practical history.

In this episode, we explore the story behind the diamond-shaped backpack patch, also known as a lash tab or sometimes called a “pig snout.” Originally designed for hikers and climbers, this feature allowed outdoor adventurers to attach tools and gear like ice axes, ropes, and carabiners to their backpacks.

We’ll take a look at where this design came from, why it’s shaped like a diamond, and how people originally used it in the outdoors. You’ll also discover why many modern backpacks still include this feature—even though most people today never use it.

It’s a small detail that carries decades of design history, and once you learn its purpose, you’ll never look at backpacks the same way again.