We launched a poncho-style garment made from “eco-fine®,” a hybrid textile combining aluminum and yarn, on Makuake on Saturday, September 20, 2025.
At just 1 cm thick and lightweight, it has none of the stiffness typically associated with outerwear.It can be used both indoors and outdoors.
■Product Overview
Product Name: ULTRA W HEAT AIR
Product Details: https://www.makuake.com/project/ecofine_3/
■Development Background
<A Winter Where You Can Get By in Just a T-Shirt Without Heating, Defying Rising Energy Costs>
The sleeping bag we released last year, featuring “eco-fine®”—a multifunctional hybrid textile made from aluminum and yarn that took 10 years to develop—received a total of 19,713,194 yen in funding and many comments such as, “I was surprised it was so warm despite being so thin.” “Multifunctional yet thin and light.” To capitalize on this key feature,
we decided to develop “wearable eco-fine®”—designed to help people comfortably get through winter without spending a fortune on utilities—in today’s world where desk work and pet ownership have become the norm. It’s a new-concept garment for both indoor and outdoor use that feels less like wearing clothes and more like wrapping yourself in body heat,
and while it looks like outerwear, it isn’t stiff or bulky.
■Product Features
<Dual-Heat Structure Combining Aluminum-Infused Hybrid Textile and Moisture-Absorbing, Heat-Generating Material>
Our proprietary special textile, “eco-fine®,” achieves heat retention, thermal insulation, heat shielding, UV protection, breathability, and light transmission by simultaneously weaving slit aluminum-coated film yarn as the warp and polyester yarn as the weft. This fabric is used for the inner lining, and the filling incorporates Teijin’s moisture-absorbing and heat-generating material,
“Sunburner®.” The dual-heat structure—combining high thermal retention with moisture-activated heat generation—provides lasting, cozy warmth akin to geothermal heat.
<Ultra-lightweight thanks to just 3 layers and a thickness of 1 cm>
Rather than layering multiple materials to enhance functionality, we combined two multifunctional materials into a single layer,
achieving a weight of just 680g. At only 1 cm thick, it doesn’t feel bulky, making it ideal for those prone to stiff shoulders from desk work.
<+5°C Surface Body Temperature in Just 1 Minute>
Test results show that this product raises your surface body temperature by +5°C in just 1 minute and by +8°C or more in 3 minutes, demonstrating significantly faster warming speed and higher temperatures compared to standard sweaters.
＜Water-repellent finish and machine washable＞
The surface features a water-repellent finish, making it safe for outdoor use. (Please note that it is not waterproof, so we do not recommend using it in prolonged rain.)
＜Pursuing minimalism. The pocket doubles as a storage bag＞
No separate bag is included; the inner pocket serves as the storage bag. Furthermore, folding instructions and videos are incorporated into the design, eliminating the need for unnecessary paper or fabric.
<Versatile for Disaster Preparedness, Everyday Use, Indoor, and Outdoor Settings>
This poncho-style product features buttons on the sides; when unfastened and unfolded, it becomes a simple rectangle measuring 140 cm wide by 195 cm long. Its design allows for a wide range of motion, reducing shoulder strain and making it easy to move around in. When fully unfolded, it can also be used as a blanket.
■Product Overview
Product Name: ULTRA W HEAT AIR
Material: 100% polyester
Size: One size fits all (unisex)
Price: List price 19,800 yen (Available at 30% off for a limited quantity)
Where to Buy: https://www.makuake.com/project/ecofine_3/