NANGA

CONCEPT


ABOUT NANGA


Our company was established in 1941 and founded by Akira Yokota. The company name, "NANGA", originated from the Himalayan mountain "NANGA PARBAT". The mountain stands at 8,126 meters and is the ninth highest mountain in the world. What separates this mountain from others is that it is notoriously difficult to climb, contributed to numerous deaths, and has the nickname of "Killer Mountain". Our philosophy behind "NANGA" is to produce a create a product that can overcome challenges under the most drastic conditions. Throughout our history of over 74 years, we have demonstrated extra care and attention to details to produce quality clothing, sleeping bags, and down jackets.

MADE IN JAPAN QUALITY


We take exceptional pride towards quality control and safety features of our products. Each NANGA product is made by skilled experts with precision and care. We use only the best materials and down feathers. Quality control and customer satisfaction has and will continue to be our foremost mission.

We take exceptional pride towards quality control and safety features of our products. Each NANGA product is made by skilled experts with precision and care. We use only the best materials and down feathers. Quality control and customer satisfaction has and will continue to be our foremost mission.

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TECHNOLOGY 01

YKK × NANGA

NANGA x YKK parts which reduce snagging and catching

To reduce snagging and catching to the fabric, our sleeping bag installed specialized YKK parts as fasteners.


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When handling a sleeping bag made with the thinnest of fabrics, there is the fear that the fasteners might catch or snag, preventing the bag from opening or closing, or if deeply snagged, may even cause damage to the fabric. To reduce such problems, we installed specialized YKK parts as fasteners, which diminished the gaps which can cause snagging, and have led to the achievement of a reduction in fabric snagging and damage due to snagging of the fasteners. Furthermore, we utilized resin in our materials to make our parts more lightweight (1.6g) and added phosphorescent capabilities to make it easier to open and close in the dark.

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Due to the concave shape in the upper portion of these specialized parts, the fasteners can guide the fabric to the center, reducing the probability of snagging.

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With phosphorescent capabilities, these parts will glow in the dark, and help make fastening and opening much easier.


TECHNOLOGY 02

SOLID STRUCTURE

A new level of sleeping bag construction for efficient heat retention.

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This sleeping bag features a new level of technology, with a trapezoid box baffle structure and solid structure which maximizes the full potential of down, and allows stress-free and efficient heat retention no matter what position you sleep in. By narrowing the feet area, we have successfully reduced weight.

01. Trapezoid box baffle structure

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A distinguishing feature of this structure is that it prevents the down from bunching up, and allows for a reduction in weight. Because each of the boxes supports each other, the full loft potential of the down is maximized, and by reducing any diminished heat radiation through potential bunching, heat retention is efficiently distributed throughout the bag.

02. Foot box

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A distinguishing feature of this structure is that it prevents the down from bunching up, and allows for a reduction in weight. Because each of the boxes supports each other, the full loft potential of the down is maximized, and by reducing any diminished heat radiation through potential bunching, heat retention is efficiently distributed throughout the bag.

03. Shoulder warmer & draft tube

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With both a shoulder warmer and draft tube, the entry of cold air is prevented. However, these features are available only in the trapezoid box quilt model.

04. Three-dimensional hood

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During cold seasons it is especially important to keep the head area warm, and the three-dimensional hood envelops the head in a stress-free manner, and functionally retains heat. The fastener is positioned near the face for easy opening and closing, and operability has been improved as well.

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ABOUT THE MATERIALS 01

FUNCTION

About Functionality

Introducing the functionality that integrates NANGA's technology and philosophy


NANGA specializes in using high-quality down and manufacturing our products in Japan. We rigorously select only down that is imported from Europe and washed in Japan. Naturally it is free of any impurities, and there is almost no trace of that distinctive down smell. A sophisticated refining process is necessary to maximize the potential of the characteristics of down. The quality of Japan's purification process is second to none when compared to other countries. Our products are sewn in Japan by only the most skilled artisans.

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01. Drawstring

By using the locking drawstring it is possible to adjust temperature and fit.

04. Three-dimensional hood

Insulating material in the shoulder area prevents warm air from escaping. Equipped primarily on 3 and 4 season sleeping bags.

03. Draft tube

Internal tube blocks cold air from coming in through the gaps in the zipper, preserving warmth. Equipped primarily on 3 and 4 season sleeping bags, same as the shoulder warmer.

04. Zipper

Equipped with YKK5C. Considered to be the optimal zipper for sleeping bags based on strength testing by YKK.

05. Sizing

The regular size has a max length of 210cm and a max width of 80cm, making for a comfortable bag. We also offer long and short versions.


ABOUT THE MATERIALS 02

CONSTRUCTION

About Product Construction

The 3 quilting structures used by NANGA. We leverage a deep understanding of the strengths of each type to identify the optimal application for each product.


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This sleeping bag features a new level of technology, with a trapezoid box baffle structure and solid structure which maximizes the full potential of down, and allows stress-free and efficient heat retention no matter what position you sleep in. By narrowing the feet area, we have successfully reduced weight.

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Single quilt construction

This method is very simple and minimizes weight. The inside and outside layers are directly sewn together for lightweight and compact construction. This construction is used for summer bags.

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Box quilt construction

This is the most efficient method for optimizing the insulating quality of down. A breathable mesh is layered between the inside and outside layers, and is equipped with crosswise boxes to prevent clumping to one side.

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Trapezoidal box construction

Boxes support each other in this construction; this maximizes the down's "loft," and efficiently insulates by minimizing clumping and heat release.


ABOUT THE MATERIALS 03

MATERIALS

About Materials for The Product

The materials used by NANGA


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AURORA-TEX®

With both a shoulder warmer and draft tube, the entry of cold air is prevented. However, these features are available only in the trapezoid box quilt model.

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Nylon

It is among the most lightweight of synthetic fibers, and offers elasticity and frictional strength. Dirt easily comes off of this smooth surface, making it easy to care for; it is minimally absorbent so it dries quickly even if it gets wet. It is compatible with many compounds, and can be used with water repellent or breathable waterproofing coatings.

* Denier A unit of fiber density. 1 Denier(dn) = a fiber with a weight of 1g at a length of 9,000m The higher the Deniers, the thicker the fiber; materials using thicker fibers are more durable.

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ABOUT THE DOWN 01

QUALITY

A concern for quality

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NANGA down is carefully selected at sites where it is produced, and aims at the highest quality. Washed and refined domestically, NANGA guarantees the utmost in quality.


NANGA uses the down from mature waterfowl. Because it is washed and refined domestically, it has the high functionality for temperature and humidity control that belongs essentially to down, and is sturdy without the smell that is peculiar to down.


ABOUT THE DOWN 02

FILLING MATERIALS

930FP    DOWN 

Hungarian Silver Goose

Only Hungarian Silver Goose down is used, which is washed domestically. 90-7% down with a fill power of 930 FP, a very high degree of thermal insulation.

860FP    FEATHER 

SPDX

Only Polish White Goose down of the highest quality is used, which is washed domestically. 93-7% down with a fill power of 860 FP, a very high degree of thermal insulation.

770FP    FEATHER 

UDD

Ultrahydrophobic (super water-resistant) processing is added to DX down, yielding a high quality, high performance down with a fill power of 770 FP. Down and a water-repellant resin are joined at the molecular level, blocking the permeation of water by making a wall of fine particles. It is the highest grade of down, which "lets moisture pass through, but does not absorb water."

760FP    DC.FIBER 

DX

Only European White Duck down is used, which is washed domestically. 90-10% down with a fill power of 760 FP. It is a high-quality down, excelling in cost and performance.


Fill power index (FP)

expresses the "down strength" and "resistance to pressure" according to standards for measuring down. A fill power of 760 means that if 30g of down is pressed down on with normal pressure in an experiment, it shows a resistance of 760 cubic inches. The higher the FP rating, the better the down is.

Bulkiness (Fill Power)

The quality of down is examined by the IDFL (International Down and Feather Testing Laboratory) of the United States, and only down that has met each fill power is used.

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ABOUT THE DOWN 03

CERTIFICATE OF ORIGIN

Proof of Country of Origin

We attach proof of the country of origin for the down used in NANGA down products. This proves that NANGA down uses only European down.

HUNGARIAN SILVER GOOSE DOWN

POLISH WHITE GOOSE DOWN

EUROPEAN WHITE DUCK DOWN

WHITE DUCK DOWN

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ABOUT EUROPEAN NORM 01

EUROPEAN NORM

About "European Norm"

For temperature ratings, NANGA uses the uniform standard used in  European countries (European Norm).


EN (European Norm) is the name of the uniform standard that has been established in Europe. It is also called the European Standard. The calculation of temperature ratings for sleeping bags is defined by EN13537. Manufacturers used to calculate temperature ratings by their own methods, but now ratings are displayed based on unified criteria. Tests are conducted by authorized third parties for fairness. This is a big difference from temperature ratings based on manufacturers' own standards.

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EN 13537 testing method

A mannequin equipped with temperature sensors is dressed in long sleeves and underwear down to the ankles, then laid inside a sleeping bag on top of a camping mattress. Temperature is measured at 5 locations inside the mannequin, and heat radiation levels are also measured. The measured temperatures and the room temperature in the laboratory are plugged into an equation to produce a value. A sleeping bag's ability to retain warmth is affected not only by the amount of stuffing, but also by the type and thickness of the fabric and accessories like zippers, so all these elements are judged comprehensively in the test.


European Norm ratings

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The temperature range at which an average adult woman can sleep without feeling cold. (Since women generally feel cold more easily than men, this level is calculated around 5℃ higher.)

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The temperature range at which an average adult man can sleep for 8 hours curled up inside the sleeping bag (lower temperature limit). Temperatures lower than this are in a risky range.

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The temperature range an average woman can handle for up to 6 hours curled up enough to hug her knees. The body will shiver in an attempt to product heat, and basal metabolism will increase. Using a sleeping bag at this temperature range also brings risk of hypothermia, and is extremely dangerous.

* Displayed temperatures are for reference only. Actual results vary widely between individuals depending on experience, strength, and physique. Please remember that the ratings are only for reference.

* Women should refer to Comfort, and men should refer to Limit.

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NANGA DOWN GUIDE 01

DOWN CIRCULATION

The Nanga Down Cycle

A four-part introduction to Nanga's recommended down product life cycle


The down used by Nanga begins as high-quality, unprocessed, imported down. It is then cleaned and processed by a Japanese domestic down manufacturer, before being made by Nanga into finished products. These products can be used anywhere, from in town to the great outdoors. Their lives can be extended with proper care. When a down product is finally worn out, a recycling project allows that down to be brought back to life as a new product. Here, we would like to introduce Nanga's recommended down product life cycle in four parts.

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What part of the bird's feathers does the term "down" refer to? The ins and outs of down

The term "down" refers to the feathers that grow on the breasts of water fowl. Down is light and offers great insulation, along with the ability to pass moisture into the atmosphere. Balls of down are known as "down clusters." Down is a precious material. It can be collected only in small quantities from a single bird, and is not found in land fowl. It is only found in water fowl, which live in waterside areas and need protection against the loss of body temperature. The down that is used as a material for manufactured products comes primarily from two kinds of water fowl: geese and ducks. Goose down is large. Its fine, soft fibers provide excellent insulation and water absorbency. In contrast, duck down is firm and flexible, which gives it great resiliency, making it ideal for use in products that need some springiness.

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Kawada Feather, Japan's leader in making beautiful down

The down that Nanga uses in its products is cleaned and processed by the down manufacturing company Kawada Feather. Unprocessed down from water fowl can be covered with dust and dirt that is invisible to the naked eye. When this dust and dirt comes off, it can lead to a decrease in the down's insulation ability, as well as the appearance of bacteria and mites. Kawada Feather's main factory is equipped with purification and processing equipment of the company's own design. The factory is located on the Ise Plain in Mie Prefecture, Japan. The pristine water provided by the beautiful, mountainous environment is a key factor in the process of cleaning the down at this factory. The dry air causes the down to expand, which further improves the factory's ability to remove the dirt. The water is clean and extremely soft, which makes it perfect for washing away dirt. Kawada Feather produces its beautiful down with the careful use of the benefits of the environment, advanced technology, and human skill and effort.

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Down can be washed at home! "The right way to wash down"

"Washing down has a harmful effect on its quality." This is a common misconception. The truth is that washing down correctly will cleanse it of moisture and oil, and bring back its fluffiness. There is no need to wash down frequently. However, we would like to share with you the correct method for washing down, so that you can get the most out of using it.

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01

Place the down in a mesh laundry bag.

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02

Choose the same setting on your washing machine that you would use for a blanket.

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03

Do not use the spin cycle. Instead, wring the down out by hand and dry it in a shaded area out of direct sunlight. Then, pat it down with both hands, and even out any wrinkles.

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Green Down: The down recycling project

The Green Down Recycling Project reuses down, which is a finite resource. This project, in which down products from all manufacturers that are no longer being used are collected, refreshed, and reborn as new products, offers several benefits.

The Main Benefits of Recycling Down

Environmental

Reduces waste, reuses resources, limits carbon dioxide emissions, provides environmental education

Promotes the employment of persons with disabilities

Commissioning of down product sorting and disassembly processes

Contributes to local economies

Partnership with the Red Feather (Central Community Chest of Japan)

Provides stable supply of down

Increased supply and stabilized prices through recycling

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