This duvet is made from mature mid-winter white duck down wrapped in undyed and unbleached fabric.
The warmth of a feather comforter changes depending on the amount of feathers.
The amount of feathers has been adjusted so that it can be used differently depending on the air conditioning environment and bedroom environment.
Choose from three types to suit your home.
The amount of feathers has been reduced by approximately 18% (single size) compared to regular feather comforters. If you live in a home that has good insulation and is warm even in winter, you can adjust the amount of down to a smaller amount to make your duvet more comfortable.
3rd photo From the left: regular, medium, and light.
Filling / white duck down 80%
Fabric material / 100% cotton, twill, unbleached, undyed
We can make this item to your desired size. Whether you’d like it to fit the width of your existing bed, add an extra 10 cm in length because you’re tall, or match the size of bedding you already use, we can adjust the dimensions to suit your needs.
Even special sizes that match your current bed or bedding—sizes that standard ready-made products can’t accommodate—can be carefully made to order at our in-house factory in Japan. We also welcome inquiries for overseas standards such as US/EU sizes for bedding, mattresses, and linens.
Please enter your requested size and intended use in our contact form. We will get back to you with a quote and the estimated delivery time.
Iwata products can be used comfortably for a long time by maintaining them at home.
イワタの寝具は長く快適に使っていただけるように、できるだけご家庭で日干しや水洗いのしやすい仕様にしています。素材の機能性が充分発揮された状態でお使いいただくためにご家庭でのメンテナンスをおすすめします。
Oeko-Tex is an international safety standard for textile products that prohibits or restricts the use of substances harmful to the human body in textile products, and is issued only to products that meet the standards.
The Iwata brand receives certification for each product. Not only the main materials (feathers, natural wool, and fabrics), but also all components used in bedding, such as threads and zippers, meet the standards and have been proven to be safe down to the single thread.

Unbleached fabric is characterized by the natural texture of the unbleached and undyed material. Because unbleached raw cotton is used, black grains from cotton stems and leaves may remain on the surface of the fabric, but they are harmless. They will gradually become less noticeable after washing.
If the purchase price is less than 30,000 yen (excluding tax), a shipping fee of 500 yen (excluding tax) will be charged.
Large items (bed frames, mattresses) will be quoted separately.
キャメル素材
リネン素材
綿素材
羽毛素材