Most Popular Type: Larkowl Basic
A firm, supportive sleeping surface that makes it easy to turn over.
By layering camel and yak wool, it achieves excellent humidity regulation, heat retention, and support.
Using luxurious natural fibers, this master mattress surpasses spring mattresses.
This custom-made mattress is crafted with passion by a master who is thoroughly knowledgeable about materials and construction. Made with luxurious natural fibers such as yak and camel, it provides a comfortable sleep experience throughout all four seasons.
We have also eliminated the vibrations and swaying common with steel springs, while also pursuing cushioning and ease of turning over. This is a natural, high-performance mattress that Iwata confidently recommends.

Four Features of "Larkowl"
Comfortable and Breathable: While conventional mattresses often use urethane, which has poor moisture release and can cause stuffiness, the natural materials used in "Larkowl" are excellent at regulating humidity and resist stuffiness. This creates an optimal sleeping environment.
Pleasant Warmth: Luxuriously uses wool from two-humped camels that endure extreme cold of -40°C, and yak wool adapted to even harsher environments. The porous fibers, excellent at retaining heat, trap air, preventing body heat from escaping and providing pleasant warmth.
Ease of Turning Over: Luxurious natural fibers are layered so that the fibers become finer towards the top. Furthermore, combining them with a polyester core material stabilizes sleeping posture and makes turning over easier.
Supple Cushioning: The unique layered structure provides supple cushioning. It cradles the body while suppressing excessive sinking and relieving pressure. It helps heal daily fatigue and supports a comfortable awakening.
Custom-Made by a Master Craftsman
Using carefully selected fabrics and materials, skilled craftsmen meticulously finish each item.
You can choose the combination of cushion units.
Camel + Yak
By layering camel and yak, excellent humidity regulation, heat retention, and support are achieved.

Cushion Unit: Camel/Yak
Core Unit: Polyester
Fabric Material: Oxford/100% Cotton/Plain
Mattress Height: Approximately 18 cm
Certified as a Kyoto Smart Product in recognition of our commitment to “circular design that minimizes waste and carbon emissions”
Iwata Co., Ltd.'s mattress "LARKOWL" has been recognized as a "circular design mattress that minimizes waste and carbon emissions" by the Kyoto Chiesango Creation Forest (Chairman: Yoshiko Tsukamoto). We received the "Reiwa 5th Kyoto Smart Product" certification and were awarded a certificate on December 13th. IWATA's bedding company pursues the creation of environmentally friendly products based on its corporate policy of ``Being in harmony with nature from the moment you sleep.''
About IWATA's purpose
Through our corporate activities, we aim to achieve "harmony with nature" from two approaches. One is to provide ``high-quality sleep that is in sync with the rhythms of nature'' to the busy lives of modern people. The other is ``manufacturing within the limits of nature.'' This is an attempt to shift from a one-way linear economy of mass production, consumption, and disposal to a sustainable circular economy. In order to realize a decarbonized society, it is necessary to expand renewable energy and transition to a circular economy. In Eastern thought, there is the idea of ``the union of heaven and man (heaven = the universe, nature and humans are one).'' Following the teaching that humans are part of nature and that our lives are closely related to nature, we would like to develop products that respect the harmony between nature and people's lives, and build a sustainable manufacturing process. We hope.
IWATA's approach to SDGs (sustainability):
https://www.iozon.co.jp/iwata-csr
You can choose from two colors for the upper and lower decorative tassels: white and red.
It is securely bound by a master futon maker with a special needle several tens of centimeters in length.
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.
After their useful life, they can be re-tailored or have parts replaced, just like a futon.
The custom-made mattress "Larkowl" is unique to you.
We will add your name as proof of order.
Iwata products can be used comfortably for a long time by maintaining them at home.
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.

This item is large and requires confirmation of the delivery route, so it cannot be purchased from the cart. Please contact us using the form below.