pentagon72 | Ultra-Lightweight Slim Folding Umbrella
A1551-Black
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Weighing approximately 72g. A slim, lightweight folding umbrella designed for portability.
Because it's an umbrella you keep in your bag for sudden rain, you want to lighten the burden of carrying it. The pentagon72 was developed with this in mind. The main parts of the frame are made of 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 to approximately 72g, the burden of weight is reduced. -
Slim design with a width of approx. 3.5cm, easy to 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 is easy to fit into gaps in bags, making it suitable for carrying in all daily situations. -
Lightweight and slim, yet practical strength. A frame that can withstand wind speeds of 15m/s.
Despite its lightweight design, it has passed wind resistance tests by a third-party organization at wind speeds 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 an Easy-Dry treatment that allows most water droplets to fall off with a light shake after use. A PFOA-free water repellent agent that is environmentally and human-friendly is used. -
World-standard safety "OEKO-TEX® certification"
Uses OEKO-TEX® Standard 100 certified fabric, which is the world's highest standard for safety. 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.
