Further Details
Your Swiss Army Knife Just Might Have a Secret Slot to Add an Extra Tool
With a bit of DIY hacking, you can sneak in firesteel or another small implement and really make your SAK your own. Here's how.
You’ve Probably Never Noticed Hidden Detail on Your Jacket
The design choice dates back to the Middle Ages.
Mechanical or Quartz Watch? This Feature Is a Dead Giveaway
It's all in the seconds hand.
This Is the Real Reason T-Shirts Have Pockets
The evolution of the modern fashion staple is a windier tale than you think. It's also a reminder of how much times have changed.
From Our Partners
Why Do Aviator Sunglasses Have Green Lenses? The Reason Has Nothing to Do with Looks
Blue skies call for green lenses.
By Gerald Ortiz
How the “Nonic” Pint Glass Earned Its Name
The origin of the Nonic name is obvious and still surprising. Also, the glass's familiar side bulge does more than you think.
By Tyler Chin and Johnny Brayson
The Most Annoying Aspect of Summer Driving, Explained
It's time you understood the mysteries of Helmholtz Resonance.
By Ben Bowers
Those Markings on the Sides of Your Sunglasses Serve a Secret Purpose. But They Might Be Hiding Something
Breaking down the dots, leaves, bars, arrows and beyond on the front of your frames.
Some Cast-Iron Skillets Have a Hidden “Feature.” It’s Actually a Defect
Once you find this tricky little detail, you won't be able to unsee it.
By Will Price