KALCT | World's Lightest, Windproof, Durable, Compact Long Umbrella
A2736-Black
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- April 22, 2026: Featured in ONKUL Vol. 24
Weighing approximately 172g, half the weight of a vinyl umbrella! The world's lightest* long umbrella to make rainy days hassle-free
Defying the common notion that "long umbrellas are heavy and cumbersome," the "KALCT" is an ultra-lightweight long umbrella weighing just approximately 172g.
While maintaining a standard size (58cm main rib, 8 ribs) that provides ample protection, it achieves astonishing lightness. This is a new concept umbrella that combines the reliability of a long umbrella with the portability of a folding umbrella.
*As of May 2026, based on our own research in the market for long umbrellas with 58cm main ribs and 8 ribs.
[Three Key Features]
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Approximately half the weight of a vinyl umbrella! Amazingly light at "around 172g"
The central shaft and all ribs are made from lightweight and robust carbon fiber. It's so light you'll forget you're carrying it, eliminating any burden when you're out and about. -
67cm in length! Compact enough not to get in the way on trains
Its compact design is about 17cm shorter than typical long umbrellas. The bulky J-shaped handle has been eliminated and replaced with a smart strap that can be hung on your wrist. -
Withstands winds of 15m/s! A tough structure that won't break even if it flips inside out
It maintains the reassuring "8-rib" structure. With flexible carbon ribs that deflect wind and a design-registered joint part, it is robust enough not to break even if it flips inside out in strong gusts.
[Commitment to Functionality and Quality]
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"Easy-Dry" water repellent finish that shakes off water with a flick
Water droplets slide right off with a light shake, making it easy to shake off water when entering buildings or vehicles, showing consideration for those around you. Thanks to our unique treatment, the high water-repellent effect lasts long even with daily use. -
"OEKO-TEX® certified" at an international standard, safe for babies
Uses fabric that has cleared strict tests for harmful substances, making it safe for both skin and the environment. It boasts a high-quality, PFOA-free finish that is environmentally friendly.
Umbrella Diameter: Approx. 102cm
I used to dislike long umbrellas.
Even after dealing with umbrellas for over 30 years, I was bothered by how "heavy and cumbersome" they felt to carry after the rain stopped, so I found myself choosing only folding umbrellas.
However, long umbrellas still offer convenience when it comes to the sense of security they provide during rain, their smooth opening and closing, and the ease of quickly folding them.
"If we, who specialize in developing lightweight folding umbrellas, were to seriously create a long umbrella, how light could we make it?"
The development of KALCT began with that pure curiosity and challenge.
Based on the design philosophy of folding umbrellas, we thoroughly reviewed materials and structures from the frame to the fabric. The result is a light and compact long umbrella, among the lightest in the world, while maintaining the size unique to long umbrellas.
To address the concern that "light umbrellas might be fragile," we focused on a structure that flexibly deflects wind, ensuring robustness that can withstand everyday wind and rain.
The name KALCT embodies our intuitive desire for something "light and compact."
An umbrella is not just a tool to keep out the rain. We hope it can be something that lightens the heavy mood of a rainy day, even just a little.
"I've gotten used to the convenience of folding umbrellas, but I really wanted the security of a long umbrella."
We especially want those people to pick this up.
