There is one thing that almost every traveller has probably done at some point: packed far too many shoes.

One pair for walking. One for the beach. One for dinner. One that somehow goes with everything. Then you arrive at your destination and realise you've sacrificed half your suitcase to footwear.

Commbi has a rather clever idea for solving that problem.

The lifestyle footwear brand creates slides, mules, clogs and slippers with a patented interchangeable footbed system, allowing the same shoe to change its look and feel simply by swapping the footbed.

It sounds simple, but it changes the way you think about a shoe.

Instead of treating footwear as one fixed product, Commbi treats it more like a modular wardrobe. Choose your base shoe, then change the footbed depending on your mood, outfit, season or comfort needs. The company's footbeds work across its different silhouettes, so the same pair can take on a completely different personality in seconds.

And that is precisely what caught the attention of Fast Company.

Soon after Commbi launched, Fast Company described its modular slides as coming for Birkenstock's throne, highlighting the brand's attempt to combine the supportive comfort people love in traditional footwear with a sleeker and more adaptable design.

The concept was also put to the test by Well+Good, whose editorial review found that the interchangeable system was more than simply a gimmick. The publication tested the shoes over a full day and highlighted the ability to switch footbeds according to the occasion, season or desired feel.

That flexibility is arguably the most interesting thing about Commbi.

The brand was founded by husband-and-wife creative duo Sarah and Chris Rhoads, the photographers and directors behind We Are The Rhoads. Their work had taken them into the worlds of fashion and lifestyle photography, where they repeatedly found themselves wearing comfortable slides but wishing they could find something that combined better support with a more considered aesthetic.

Eventually, they decided to create the shoe themselves.

Working alongside podiatrists and biomechanics specialists, they developed contoured footbeds intended to provide structural support rather than simply soft cushioning. The system is now protected by an issued U.S. patent.

The result is a shoe designed around a simple philosophy: looking good should not mean feeling uncomfortable.

For travellers, that philosophy makes a lot of sense.

Imagine packing one pair of Commbis for an Ibiza escape and changing the footbed depending on the day. A cushioned option for walking around Ibiza Town. Something softer for a relaxed morning at the villa. A different texture for dinner. A warmer footbed for a cooler evening.

Instead of filling your suitcase with several pairs of shoes, you can create different combinations from the same base.

Commbi has even addressed this idea directly, positioning its interchangeable footbeds as a way to simplify a travel wardrobe. The concept is particularly useful for anyone who likes to travel light without wanting to wear exactly the same thing every day.

And Ibiza is almost the perfect setting for that kind of footwear.

A typical island day can move between completely different environments. You might start with coffee at the villa, walk through the old town, spend the afternoon by the sea, stop for lunch and then head somewhere beautiful for sunset. You want something that can keep up with the day without making you feel like you're wearing technical outdoor footwear.

That's where Commbi's relaxed silhouettes come into their own.

The Softie Slide, for example, combines a water-resistant vegan leather upper with memory foam, while other styles use suede, Napa leather or shearling. The current collection also includes the Atlas Clog, giving the modular system another silhouette for those who prefer a more enclosed style.

There is also a sustainability argument built into the concept. Instead of replacing an entire shoe when you want a different look or when the footbed wears out, Commbi allows you to replace the footbed separately. The company says this approach is intended to reduce waste, while its packaging uses recycled paper and the brand transports products by ocean rather than air.

Of course, comfort is personal, and no shoe will suit every foot. Commbi's current sizing uses whole sizes, and the company recommends sizing up if you're between sizes. Its shoes are also not medical devices, despite being developed with podiatrists, so specific foot conditions should always be discussed with a medical professional.

But the idea itself is genuinely clever.

Commbi isn't simply asking you to buy another pair of comfortable shoes.

It's asking why one pair can't do more.

And for travellers, that might be the most appealing part of all.

Less space in the suitcase. More combinations. More flexibility.

One pair, several possibilities, and hopefully a little more room for souvenirs.