25 Secret Features Your Favorite Everyday Products Are Hiding

Some of the best-designed products have secret uses hiding in plain sight.

ever wonder what that extra lace hole on your running shoes is for gear patrol lead full Photo by Chandler Bondurant for Gear Patrol

Welcome to Further Details, a series dedicated to ubiquitous but overlooked elements hidden on your favorite products.

Products we use every day often have small details that go overlooked. Maybe you’ve noticed them and brushed them off, or never noticed them altogether. But when you take the time to learn about the function, sometimes you get a new perk out of your product that you’d never considered.

fd aviator gear patrol lead fullPhoto by Chase Pellerin for Gear Patrol

Why Do Aviator Sunglasses Usually Come with Green Lenses?

Seeing green? There is a pretty good reason why, and it dates back to the beginning of manned flight.

further details locker loop gear patrol lead fullPhoto by Henry Phillips for Gear Patrol

Ever Wonder Why There’s a Loop on the Back of Your Button-Down Shirt?

It prevents wrinkles, lets people know if you’re spoken for and it’s on the back of your favorite button up shirt.

fd sweatshirt v gear patrol lead fullHenry Phillips

This Is the Reason Why Sweatshirts Have a V at the Neck

The little V at the neck of your favorite sweatshirt has a long history and it’s more than just for looks.

fd lapel buttonhole gear patrol lead fullPhoto by Henry Phillips for Gear Patrol

Why Do Suits Have a Random Buttonhole on the Lapel?

The mystery of the buttonless buttonhole.

fd napoleon pocket gear patrol lead fullHenry Phillips

What the Heck Does Napoleon Have to Do With Your Jacket’s Handiest Pocket?

The outdoor industry’s term for the ubiquitous zippered chest pocket is inextricably linked to the legendary French conqueror.

further detailsHenry Phillips

Think You Know What That Small Pocket on Your Jeans Is For? You’re Probably Wrong

The jeans you’re wearing right now have a curious feature you might have wondered about.

fd wine bottle gear patrol lead fullPhoto by Henry Phillips for Gear Patrol

Why the Hell Is There a Dimple on the Bottom of Wine Bottles?

Bottoms up — wait, what’s that dent?

cast iron heat ring gear patrol lead fullPhoto by Henry Phillips for Gear Patrol

There’s a Very Tricky Ring on the Bottom of Your Cast-Iron Skillet. What’s It for?

The answer: history.

chemex nipple gear patrol lead fullTyler Chin

Why the Hell Does Your Chemex Have a Nipple?

The button harkens back to a time before coffee snobs were as kitted out as the café down the street.

stout beerEdgar Cervantes

Your Pint Glass Has a Weird Bulge. Here’s What It’s For

The nonic pint glass is one way to protect clumsy beer guzzlers and overwhelmed bartenders.

brass doorknobFilo

Why Are So Many Door Knobs Made of Brass?

The Ancient Egyptians used copper as a sterilizer. Now the metal is protecting us from coronavirus.

fd speedhooks gear patrol lead fullChase Pellerin

This Is Absolutely the Fastest Way to Lace Your Boots

Do the speed hooks on your boots seem…not so speedy?

ever wonder what that extra lace hole on your running shoes is for gear patrol lead fullPhoto by Chandler Bondurant for Gear Patrol

Ever Wonder What That Extra Lace Hole on Your Gym Shoes Is For?

Your athletic shoes likely have an extra lace eyelet, and you might not know how to use it correctly…until now.

converse fuzzy sole gear patrol lead fullGear Patrol

Ever Notice That Converse Chuck Taylors Have Fuzzy Soles? Here’s Why

Clearing up the fuzzy details on the Chuck Taylor’s strangest feature.

further details backpack whistle gear patrol lead fullHenry Phillips

Your Backpack Has a Hidden Feature That Can Save Your Life

Not every pack has this smart touch, but if yours is designed for outdoor activities like hiking, mountain biking, skiing or snowboarding, it probably does.

bic pen top gear patrol lead fullBic

You Know That Little Hole in Your Pen Cap? It Could Save Your Life

Maybe stop chewing on your pens.

fd helium escape valve gear patrol lead fullZen Love

Why Does Your Rolex Dive Watch Have a Hole in Its Side?

Like a screen door on a submarine, you wouldn’t think a hole in the side of your dive watch would be a good idea.

further detail freehub gear patrol lead fullGear Patrol

Your Bike’s Most Unique Feature Is Completely Hidden

Geeking out on the sounds of coasting may forever change the way you look at — and listen to — these two-wheeled wonders.

knife bladeHenry Phillips

What Do the Random Characters on Your Pocket Knife Blade Mean?

Open your pocket knife. On one side of the blade, close to the handle, there are likely numbers and letters. They signify more than you might think.

fd command key gear patrol lead fullHenry Phillips

The Real Meaning Behind the Strange Symbol on Every Apple Keyboard

Ever wonder how the Command key became the most important key on every Mac computer? And What the heck does the pretzel-shaped symbol mean?

fd headphone rings gear patrol lead fullGear Patrol

Ever Wonder What Those Rings on a Headphone Plug Are For?

The number of rings on the headphone jack matters a lot.

further detail antenna lines gear patrol lead fullChandler Bondurant

Your Phone Has a Tiny, Crucial Design Detail You’ve Probably Never Even Noticed

The small stripes of plastic along a smartphone’s outer edge are one of its most important features.

ram console math gear patrol lead fullPhoto Courtesy of Reddit u/BobbyBrewski

Did You Know the Ram 1500 Has Math Formulas Hidden Inside? We Found Out Why

Ram owners may be wondering why their truck contains crib notes fit for high school math class. So we asked.

fd prnd gear patrol lead fullAudi

Ever Wonder Why Your Car’s Shift Goes P-R-N-D? Here’s Why the Government Says So

Uncle Sam explains.

nissan sport mode buttonNissan

Ever Wonder What Sport Mode in Your Car Really Does?

That little switch doesn’t unlock more power, but it might make you think it does.