Thread Duvet (feather duvet)
9 products
A duvet that utilizes the excellent functionality of high-quality down.
IWATA's premium down comforter is crafted using high-quality down, carefully selected with meticulous attention to bird species, breeding conditions, and sorting processes. The outer fabric is made from 100% cotton, without the use of any resins or adhesives to tighten the weave.
Through our proprietary processing technology, we achieve a world-class level of cleanliness while enhancing the natural properties and durability of the materials.
Exceptionally hygienic, this comforter can be easily washed at home and dried directly in the sunlight. Its excellent heat retention and moisture-regulating properties help maintain a comfortable sleeping environment throughout the night.
Duvet Lineup and Specifications
9 products
Only items that have passed inspection at the laboratory are delivered.
The feel of down products depends on the maturity of the down, not the down content. The maturity of down is determined by the size of each down cluster. Mature down has a greater number of barbs on the down plume, forming larger down clusters that provide high heat retention. On the other hand, even if there is a lot of immature, small down, the down content will increase, but such immature down has low heat retention and is not warm, nor does it provide a comfortable sleep.
At Iwata, we have set strict quality standards and only use down that has passed inspections at the Iwata Down Laboratory.
Immature down
Mature and large down
The fabric is also carefully selected.
Conventional down fabrics were resin-treated to prevent down from escaping, meaning they could not be sun-dried or washed.
Iwata, using its proprietary know-how, has developed a natural 100% cotton fabric. Each product undergoes meticulous inspection by our engineers, ensuring the highest quality.
▲Before processing
Impurities that cause mold and odors are present
▲After treatment
Feathers with impurities removed, resulting in beautiful transparency
Can be hand-washed at home
Conventional down products could not be washed with water due to concerns about mold and odor. Iwata solved this problem with its ionized special technology.
It can be washed with water and sterilized by drying in the sun, ensuring peace of mind regarding hygiene. Matted down can be loosened, restoring its original fluffiness and function, and improving durability.
General fabrics, which are sealed with resin or glue, not only fail to absorb moisture, but also inhibit the moisture-absorbing and releasing properties of down.
Iwata fabrics absorb sweat and moisture instantly, ensuring the down's performance is not compromised.
We thoroughly inspect for harmful chemicals.
OEKO-TEX is an international safety standard for textile products that prohibits or restricts the use of harmful substances in textile products and is issued only to products that meet its standards.
Iwata's bedding is certified "product by product." All materials used in our bedding, including down, natural hair, fabric, thread, and zippers, meet the standards, proving their safety down to the very last thread.
Feather Futon 60th Anniversary Development Story
One of Iwata Co., Ltd.'s flagship products, the Duvet, celebrated its 50th anniversary in 2014.
The passion for making Duvet has been passed down through generations.
We trace that passion and the journey to its development.
⇒ Read More
We've applied science to the comfort of down comforters.
Our customers experienced the excellent heat retention of our down comforters.
Temperature and humidity inside the futon
We measured the temperature and humidity inside Duvets during sleep at home, using both the Iwata Down Futon and a regular futon. The results showed that the Iwata Down Futon maintained warmth throughout all time periods. Additionally, it suppressed humidity increases, indicating that it maintains an appropriate internal environment within the futon. (Demonstration 1)
Sleep onset
The use of Iwata down futons resulted in improved sleep onset and reduced drowsiness upon waking. (Tests ②③) *Measurements taken in participants' homes during winter (compared to our own products)
※This data was presented at the 37th Annual Meeting of the Japanese Society of Sleep Research. ※Reproduction of this data is prohibited.
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