pentagon72 | Ultra-Lightweight Slim Folding Umbrella
A1551-Black
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Weighing approximately 72g, this slim, lightweight folding umbrella is designed for portability.
Because you keep an umbrella in your bag for sudden downpours, you want to reduce the burden of carrying it. This is why the pentagon72 was developed. The main part of the frame uses lightweight and highly elastic carbon fiber.
[3 Key Features]
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Ultra-lightweight "approx. 72g" carbon fiber frame
The main parts of the frame are made of carbon fiber, which combines lightness and flexibility. By keeping the main unit's weight down to approximately 72g, the burden of weight is reduced. -
Slim design with a width of "approx. 3.5cm" to easily fit into gaps
When stored, it has a very slim design, with a width of approximately 3.5cm and a length of approximately 21cm. It easily fits into gaps in bags and is suitable for carrying in all everyday situations. -
Practical strength despite being lightweight and slim. Frame withstands wind speeds of 15m/s
Despite its lightweight design, it has passed a wind resistance test conducted by a third-party organization at a wind speed of 15m/s (0 degrees front, product fixed environment).
[Commitment to Function and Quality]
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Strong water repellency "Easy-Dry" & PFOA-free
It features Easy-Dry processing, which allows most water droplets to fall off with a light shake after use. A PFOA-free water repellent agent is used, which is environmentally and human-friendly. -
Global standard safety "OEKO-TEX® certification"
The fabric used is certified by OEKO-TEX® STANDARD 100, a world-class safety standard. It has passed tests for over 350 harmful substances.
Following the previous model "pentagon79" (now discontinued), released in 2016, we embarked on developing a next-generation model aiming for further weight reduction.
To enhance the portability of folding umbrellas, weight reduction in units of a few grams is essential. We focused on an approach that involved making the central pole (shaft) that supports the umbrella's center even thinner.
In 2018, when development began, making the shaft of a folding umbrella thinner was not a common design choice due to technical concerns that sufficient strength could not be maintained.
While this thin shaft design is now common for ultralight folding umbrellas in 2026, the biggest challenge at the time was how to compensate for the reduction in strength caused by a thinner shaft.
To solve this problem, we re-evaluated our material combinations. We adopted lightweight and flexible carbon fiber for the main parts of the frame and a 15-denier lightweight ripstop fabric for the canopy.
This established a structure where even a thin shaft could provide sufficient strength for daily use. It also passed a wind resistance test by a third-party organization at 0 degrees frontal and 15m/s wind speed, objectively proving its practical durability.
The "pentagon72," weighing approximately 72g, was our first product featured on the crowdfunding service "Makuake." This project received support totaling 4,060,800 yen from 1,100 backers, becoming a significant turning point product for Amvel.
Even in 2026, years after its announcement in 2018, the "pentagon72" remains a standard model, chosen by many customers and continuing to sell well. We will continue to manufacture products based on solid verification, providing items that comfortably support daily commutes.
