I’ve been covering fashion and lifestyle for decades, and every so often, something I remember from years—or, dare I say, decades—ago goes viral again.

Lately, so much of what appears on our feeds feels familiar: capri pants, baguette bags, jelly shoes, ballet flats. Some return almost exactly as we remember them. Others come back with just enough of an update to tempt us all over again.

Jelly bags fall somewhere between the two. Back in the early 2000s, their colorful, rubbery incarnations were often called Jelly Kellys—playful takes on the Hermès Kelly bag silhouette.

Today’s version has a new name: the Jelly Firkin. The term is a play on “fake Birkin,” an internet nickname for bags inspired by one of Hermès’ most recognizable designs.

The bag behind the current craze is the Jelly Two-Way Bag from Korean label Deinet, named for its long strap that allows it to be worn over the shoulder or across the body.

Made from semi-transparent PVC, it has a structured shape, top handles, and belted closure inspired by the Hermès Birkin, while its candy-like colors give it a younger, more playful personality.

Spotted on Korean stars including HyunA and Kya of the girl group KiiiKiii, the bag soon began popping up on social media feeds around the world.

As with almost every viral accessory, Jelly Firkin dupes are now widely available online. They come in a range of colors, sizes, and prices, but materials, hardware, and proportions may vary.

At first glance, it is easy to understand the attraction. In shades such as ice blue, butter yellow, mint green, candy pink, and orange, the frosted PVC gives even the brightest colors a soft, luminous quality. They are happy colors—the kind that can lift your mood before you have even decided what to wear—yet the bag still looks polished enough for just about any occasion.

Deinet lists the bag as 100 percent PVC, but its soft, almost silicone-like texture gives it a more luxurious feel. The jelly bags I remember from the early 2000s were shinier and stiffer, with a more obviously plastic look and feel.

It may be summer in much of the world, but here in the Philippines, the rainy season is in full swing. These bags may look as though they were made for sunshine, but their sorbet hues can brighten even the gloomiest day. The PVC exterior also makes it well-suited to the rainy season.

But what finally convinced me was how easily I could make it my own. The Jelly Firkin is a bit of a blank canvas. I could tie a scarf around one of the handles, add charms and keychains, or tuck a colorful pouch inside. I could leave it simple one day and decorate it the next, depending on how much time I had before leaving the house.

That is part of the fun, especially when a bag becomes so popular that it seems to appear on every feed. We may start with the same viral piece, but a few personal touches keep it from looking quite like everyone else’s.

At least, that was how I justified buying mine. I told myself I wasn’t just giving in to another trend. I was buying a bag I could play with and style differently from one day to the next. The only problem now is convincing myself I don’t need one in another color.