Fabric & Filling

Natural Down. Everyday Comfort. Winter Warmth.

At FEI YI, we believe winter outerwear should combine warmth, comfort, and practical design.

Our down jackets feature natural duck down or goose down filling, depending on the style. Natural down helps retain body heat while offering a lightweight feel, making it a popular choice for winter outerwear.

From everyday winter jackets to longer styles designed for added coverage, our collection offers a variety of designs to suit different preferences and seasonal needs.

Explore the materials and filling used in our outerwear to find the style that works best for you.

Our Down Filling

Goose Down

Goose down is valued for its soft, lofty structure and excellent insulation potential. Its ability to trap air helps provide warmth without relying solely on heavier materials.

Depending on the filling specifications and jacket construction, goose down can be an excellent choice for lightweight winter outerwear.

Key Features

• Natural goose down filling

• Insulating structure that helps retain warmth

• Soft, lightweight feel

• Suitable for a variety of winter jacket designs

• Available in selected FEI YI styles

Duck Down

Duck down is a widely used natural filling for winter jackets, offering a practical combination of insulation, comfort, and versatility.

Its performance depends on factors such as down quality, fill power, filling weight, and garment construction. Duck down can provide comfortable warmth for a variety of everyday winter needs.

Key Features

• Natural duck down filling

• Insulating properties for cold-weather wear

• Comfortable feel

• Suitable for different jacket lengths and styles

• Available in selected FEI YI styles

How Natural Down Works

Natural down consists of soft clusters that create small spaces capable of trapping air. This trapped air helps slow heat loss, providing insulation while keeping the filling relatively lightweight.

The warmth of a down jacket depends on more than the type of down alone. Important factors include:

Fill Power

Fill power measures the loft of down under specified testing conditions. Higher fill power generally indicates greater loft per unit of down weight, but it does not determine the overall warmth of a jacket by itself.

Filling Weight

The amount of down used in a jacket affects its insulation. A jacket with more filling may provide greater warmth, depending on its construction and other material properties.

Jacket Construction

The outer fabric, lining, quilting, fit, and overall design all contribute to how a jacket performs in cold weather.

For this reason, we recommend checking the specifications of each individual product rather than comparing jackets by filling type alone.

Outer Fabric & Construction

The outer shell and lining are important parts of a down jacket. They help protect the filling, support the garment's structure, and contribute to overall comfort.

FEI YI outerwear comes in different designs and material compositions depending on the product.

Comfort & Wearability

Materials and construction are selected according to the individual design, with consideration for comfortable everyday wear.

Lightweight Insulation

Natural down provides insulating loft without requiring the same weight as many bulkier insulating materials.

Quilted Construction

Quilting helps hold the filling in designated sections of the garment. The quilting pattern and construction vary by style.

Designed for Winter Wear

Different jacket lengths, silhouettes, and designs offer options for everyday activities, commuting, travel, and seasonal styling.

For exact fabric composition, lining materials, and other construction details, please refer to the specifications on the relevant product page.

Goose Down vs. Duck Down

Both goose down and duck down are natural insulating materials. Their performance depends on the quality of the filling, the amount used, and the design of the finished garment.

Neither type automatically guarantees a warmer jacket. For the best comparison, check the product's filling specifications and overall construction.

Understanding Product Specifications

We aim to make product information clear so you can choose your outerwear with confidence.

Depending on the style, individual product pages may provide details such as:

• Filling Type: Goose down, duck down, or other specified filling

• Down Content: The stated proportion of down in the filling, where available

• Fill Power: The stated fill power, where available

• Filling Weight: The weight of the filling, where available

• Shell Fabric: The stated outer fabric composition

• Lining: The stated lining material

• Fit & Design: The style and construction of the jacket

Not every specification is available for every product. Please use the information listed on the individual product page as the reference for that particular item.

Product-Specific Material Information

The filling type, filling amount, fabric composition, lining, and construction may differ across our collection.

We recommend reviewing the product description and specifications before placing your order. This helps ensure that the jacket you choose matches your expectations for style, comfort, and seasonal use.

If you have questions about a particular jacket's materials or filling, our customer service team will be happy to assist.

Email: support@feiyidown.com

Our Commitment to Clear Product Information

At FEI YI, we believe customers should be able to understand the materials used in the products they purchase.

We aim to provide accurate, product-specific information and avoid making blanket claims about the performance of every jacket.

For the most reliable details, please refer to the materials and filling specifications provided for each individual product.