What types of down filling are available?

Short Answer (Citable)

The Main Down Filling Options

Down filling is the insulation inside a jacket or vest, and it does most of the work in keeping the wearer warm. The four available categories cover the full range of price points and performance needs in the market, and most factories can supply all of them on request.

• Duck down: the most common and economical natural fill, a good default for most programs
• Goose down: larger clusters with a higher warmth-to-weight ratio, the premium natural option
• Recycled down: reclaimed from used products and certified for traceability, for sustainability-led brands
• Synthetic insulation: polyester or blended fibers, for wet-weather performance and easy care

Within each category, the specification continues with fill power, fill weight, and down-to-feather ratio. Two jackets both labeled duck down can differ substantially in warmth and cost based on these numbers, which is why a professional spec sheet always states them.

Certification is part of the specification too. RDS (Responsible Down Standard) certification verifies ethical sourcing and traceability for down, and it is required or expected by many US and EU retailers. OEKO-TEX Standard 100 covers the chemical safety of the finished garment. State your certification requirements when requesting a quote.

Duck Down vs Goose Down

Duck down and goose down are the two natural fills used in most jackets. They come from the same category of material, but they differ in cluster size, loft, and price, and the choice affects both performance and cost per garment.

Goose down clusters are larger and loftier, which means they trap more air per gram and deliver a higher warmth-to-weight ratio. A goose down jacket can achieve the same warmth as a duck down jacket with less fill weight, making it lighter to wear. This performance advantage is why goose down is the premium option in the market.

Duck down is the economical choice. It performs well for most consumer and workwear applications, and its lower cost makes it the default for brands managing a price point. For moderate climates and everyday use, the warmth difference between duck and goose at the same fill weight is rarely decisive, so many brands choose duck down and invest the savings elsewhere in the garment.

Both duck and goose down can be certified under RDS, so the ethical sourcing choice does not force a cost decision. If sustainability claims matter to your market, specify RDS-certified down regardless of whether you choose duck or goose.

Feather content is part of the same conversation. Commercial down is a blend of down clusters and small feathers, and the ratio is stated on the specification, commonly 70/30, 80/20, or 90/10. A higher down ratio lofts better and feels softer but costs more, so the ratio is a lever for balancing warmth and price on a duck or goose spec.

Recycled Down and Sustainability

Recycled down is reclaimed from post-consumer or post-industrial products, cleaned, sorted, and re-certified for use in new garments. It gives brands a way to offer down insulation while supporting circular economy claims, and it is increasingly expected in the outdoor and fashion markets.

The important detail is traceability. Recycled down should carry certification that documents the reclaiming process and the supply chain, so the sustainability claim is verifiable rather than decorative. Retailers and marketplaces in the US and EU are tightening requirements around sustainability claims, and documentation is the difference between a credible claim and a risk.

• Recycled down reduces demand for virgin down and keeps material in use
• RDS certification covers both virgin and recycled down supply chains
• Traceability documentation should accompany every batch
• Recycled down performs like virgin down when properly cleaned and sorted
• It supports green procurement requirements in corporate and workwear programs

Recycled down is not always cheaper than virgin down; the cleaning and re-certification process adds cost. Its value is in positioning rather than price. Brands that serve environmentally conscious customers or that supply organizations with sustainability requirements should evaluate it seriously.

Synthetic Insulation Alternatives

Synthetic insulation uses polyester or blended fibers engineered to trap air like down. It is not technically down, but it is part of the filling options conversation because it competes for the same position in a jacket specification.

Synthetic fills have two advantages over down. First, they retain most of their warmth when wet, while down collapses when soaked; this makes synthetic the practical choice for rain-belt climates and for garments that will be washed frequently. Second, they are easy to care for and dry faster, which suits workwear and active use.

The trade-offs are weight and compressibility. Synthetic insulation is generally heavier than down at the same warmth level and does not compress as small for packing. For a premium lightweight jacket, down remains the better choice; for a washable workwear vest or a wet-climate jacket, synthetic is often the smarter specification.

There are also hybrid approaches: a jacket with down in the body and synthetic in the shoulders, hood, or cuffs where moisture and abrasion are more likely. Hybrid fills are common in technical outerwear and are worth discussing with the factory if your product faces mixed conditions.

Hybrid construction is also a practical way to manage cost. Because the synthetic zones replace down where it would be wasted on moisture exposure, the fill cost is focused on the body where it performs best. The specification stays simple for the factory: one down spec for the body, one synthetic spec for the exposed zones.

Fill Power and Fill Weight Explained

Fill power and fill weight are the two numbers that define how warm a down garment is, and they are frequently confused. Understanding them is essential for comparing quotes and for writing a spec that the factory can price accurately.

Fill power measures loft: how many cubic inches one ounce of down occupies under standardized testing. Higher fill power means the down traps more air per ounce, so the jacket is warmer and lighter at the same fill weight. Typical ranges are 550-650 for standard duck down, 650-750 for higher-grade down, and 750-850 for premium goose down.

Fill weight measures how many ounces or grams of down are actually in the garment. A jacket with 600 fill power and 8 ounces of down can be warmer than a jacket with 800 fill power and 5 ounces, depending on the design. Warmth comes from the combination, not from either number alone.

• Fill power: loft per ounce, the efficiency of the down
• Fill weight: total down in the garment, the quantity
• Down-to-feather ratio: the proportion of down clusters to feathers, typically 70/30, 80/20, or 90/10
• Higher ratios mean more down and better loft, at a higher cost
• Both numbers belong on the tech pack and in the quotation

When comparing factory quotes, compare like for like: the same fill power, fill weight, and ratio across suppliers. A lower price on a jacket with an unstated fill spec is usually a lower spec, not a better deal. Ask the factory to state all three numbers in writing.

There is a practical budgeting note as well. Because fill is the most expensive material in a down garment, small changes to the spec move the price noticeably. Moving from a 90/10 ratio to an 80/20 ratio, or reducing fill weight by an ounce, can bring a design into a target price without changing the silhouette, which makes the fill spec a useful tool during cost engineering.

How Down Filling Is Verified in Production

Down is the easiest material in a jacket to substitute silently, so verification matters. A responsible factory tests incoming down lots rather than trusting supplier claims, and it records the actual fill power and fill weight used in production.

• Incoming down lots are tested for fill power, ratio, and cleanliness
• Fill weight is verified per garment during the filling stage
• RDS transaction certificates document certified material for each order
• Random weigh checks continue through the production run
• Inspection reports and photos accompany the shipment

Ask the factory how it verifies fill before you place the order. If it cannot explain the testing process, treat that as a serious gap, because the fill spec is where quality and cost are most easily manipulated. A factory that documents fill verification is protecting the spec you paid for.

This verification matters for your brand's compliance too. Retailers and marketplaces increasingly request evidence that sustainability and material claims are true, and the same documentation that verifies fill for production supports your product claims at retail.

Which Filling Should Your Brand Choose?

The decision path below works for both jacket and vest programs, and it applies whether you are designing a hero product or a supporting style. The goal is a specification that matches the market position without overpaying for performance your customers will not feel.

1. Define the climate and use: extreme cold, everyday city wear, wet conditions, or active outdoor use
2. Set the price point: premium, mid-range, or entry, because filling is a major cost driver
3. Check market requirements: RDS, OEKO-TEX, or sustainability claims your buyers expect
4. Weigh care requirements: will the garment be washed often, and does that favor synthetic?
5. Request quotes for two filling options on the same design and compare the delta

For most brands, the practical default is duck down at a standard fill power with RDS certification if the market expects it. Goose down enters the picture for lightweight premium pieces. Recycled down suits sustainability-led positioning. Synthetic fits wet climates, washable workwear, and entry price points.

The factory should be able to quote the same jacket with different fills so you can see the cost difference directly. At Ginwen, the same pattern can be produced with duck, goose, recycled, or synthetic fill, and the sampling round can confirm the hand feel and warmth of each option before you commit.

Budget planning also depends on the order structure. Ginwen works from an MOQ of 50 pieces per style, sample development takes 7-14 days per round, sample fees range from $50 to $200 and are deductible from the first bulk order, and bulk production runs 25-40 days with a 30% deposit and 70% balance before shipment. These numbers make it practical to compare two fill options on the same design during sampling, because the extra sample cost is small relative to the protection it gives your bulk specification.

A practical way to structure this comparison is to ask for a two-line quote: the same garment priced with duck down and with goose down at the same fill weight, plus the delta for recycled certification if relevant. The numbers make the decision objective, and they give your team a defensible rationale for the specification chosen.