That Circular Dent on Milk Jugs Isn’t Random — Here’s What It Really Does

Why This Tiny Detail Matters

We tend to think of everyday packaging as simple, but small design choices can solve multiple problems at once: safety, durability, cost, and sustainability. The milk jug dent is a good reminder that a lot of smart engineering lives in the things we stop noticing.

Bottom Line

That circular dent is there to help your milk jug flex under pressure, resist collapse, survive minor impacts, reduce plastic usage, and recycle more efficiently. It’s a small feature with a surprisingly big job.