“I Can Wear My Necklaces Again.”

One woman on a jewelry forum put it like this: "until i replace the closures, i've got a drawer full of lovely bracelets that i can no longer wear." Another wrote, "I had to stop wearing my good jewelry because i couldnt do the tiny clasps." A third, on Reddit, said she lives alone, "so sadly asking someone for help isn't an option."

Nobody announces it. The jewelry just migrates to the dish on the dresser, and one day the dish is where all of it lives.

The tiny ring

Here's what I want you to notice: not one of those women fell out of love with jewelry; what failed them is a piece of hardware. The standard necklace closure is a spring-loaded clasp the size of a grain of rice that has to be pinched open and threaded through a ring the size of the head of a pin, behind your neck, by feel.

That maneuver asks a lot of any fingers. Fingers that wake up slowly, as one of our customers wrote: "My hands take for ever to wake up in the mornings." Fingers with acrylic nails. Fingers holding a chain behind your head while your eyes are somewhere else entirely.

One jeweler said the quiet part out loud: "The average human female finger can't manipulate clasps the size of a grain of rice or end rings the size of the head of a pin. And yet they sell them to us."

The fixes that don't fix it

Asking for help works, when help is home. "I was always having to have my husband help me put chains on," one customer wrote. Plenty of daughters have become the family clasp. But that turns putting on a necklace into an appointment, and getting dressed shouldn't need one.

The little hook tools sold for this problem mostly relocate it. One reviewer compared her purchased helper tool to what she'd been using before: "the paperclip and this fastener tool are about equal."

Clip-on magnetic clasps come closer, but reviewers report the cheap ones pull apart, catch hair, and stick to every other piece in the jewelry box. One former jewelry-shop employee summed up the category: "Most don't work, especially if you find the price to be manageable."

The necklace that never makes you use the clasp

The Addie Adjustable Chain solves it by removing the maneuver, not shrinking it. At its full 24 inches, the chain slips on over your head already fastened. Then a patented adjusting gasket lets you draw it to any length you like with one gentle pull, and it holds there all day. There is nothing to pinch and nothing to aim: you pull the chain itself.

There is a clasp on it; you'll simply never need to open it. As one customer wrote: "I don't have to unclip it to put it on!" Taking it off is the same motion in reverse: slide it long, lift it over your head. The clasp only comes into play on the day you want to move a pendant onto the chain, and that job happens in front of you, in good light, not behind your neck.

And because one chain holds every length from 14 to 24 inches, it replaces four normal chains while it's at it. The same design has gone out on millions of chains to over 1 million customers.