New Arrival: KALCT HEATBLOCK Aluminum Silver
On February 3, 2026, Amvel’s "HEATBLOCK" series will expand to include a long umbrella model that further pursues heat-shielding performance.
The newly released "KALCT HEATBLOCK Aluminum Silver" features a coating infused with aluminum powder on the outer surface. It is a new model that achieves both high, data-backed heat-shielding performance and a lightness that makes it easy to use every day.
A new, high-heat-shielding alternative to "white"
While white parasols are generally considered to be effective at reflecting sunlight and staying cool, many people have noted that they "show dirt easily" or "feel a bit awkward for men to carry."
"Aluminum Silver" is Amvel's answer to those concerns.
While featuring a stylish silver color that hides dirt well, it utilizes a special structure—detailed below—to achieve heat-shielding performance that rivals that of white parasols. It can be used without hesitation by anyone, from business settings to daily use.
A unique "aluminum powder-infused" structure that reflects heat on the surface
The biggest feature of this product is that "the polyurethane (PU) coating, which is typically applied to the back, has been placed on the outer surface."
This coating agent is formulated with fine, evenly distributed aluminum powder.
By reflecting sunlight directly at the umbrella's outermost surface before it penetrates the fabric fibers, it suppresses the temperature rise of the fabric itself and physically blocks heat from passing through to the underside.
As a result, it recorded a heat-shielding efficiency of 92.4% in testing, an exceptionally high figure even within Amvel's lineup. It is truly the go-to choice for "efficiently reflecting light and heat."
The peace of mind of a long umbrella, with a lightweight 200g design
Despite being a sturdy 8-rib long umbrella, it is designed so you can feel its lightness the moment you hold it.
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Heat-shielding efficiency: 92.4% / Near-infrared cut rate: 99.9%
Efficiently blocks light, the source of heat. It creates a cool and comfortable space even under harsh sunlight.
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Weight: Approx. 200g
Despite its substantial size with 58cm ribs and 8-rib construction, it weighs only 200g. The design ensures your arms won't get tired, even during long outings or while watching sports.
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Wind resistance: Clears 15m/s
While pursuing weight reduction, it maintains a robust structure capable of withstanding everyday wind.
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Light-blocking rate: 100% / UV cut rate: 100%
Maintains the same specifications common to the HEATBLOCK series, blocking both light and UV rays completely.
Product Details (Specifications)
| Item | Details |
| Product Name | KALCT HEATBLOCK Aluminum Silver |
| Light-blocking / UV cut rate | 100% / 100% (UPF50+) |
| Heat-shielding efficiency | 92.4% |
| Visible light / Near-infrared cut rate | 100% / 99.9% |
| Rib size / Rib count | 58cm / 8 ribs |
| Weight | Approx. 200g |
| Total length / Diameter when open | 67cm / Approx. 102cm |
| Water resistance | Water pressure resistance: 14,940mm |
| Price | 8,800 yen (tax included) |
Sales start February 3
For those seeking high heat-shielding performance in a color other than white.
Experience the "KALCT HEATBLOCK Aluminum Silver," a new form of heat-shielding that utilizes the reflective power of aluminum.
▼ Click here for the product page
KALCT HEATBLOCK Aluminum Silver Product Details
▼ Click here for detailed structure and development background