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Down Quality & Testing Standards
IceFlame down bags
Down Quality & Testing Standards
Verified Fill Power, Clean Down Sourcing, and IDFL-Certified Performance
1–2
batches per year
100%
sent to IDFL China Lab
0%
Supplier Fraud Risk
IceFlame Down Quality & Testing Standards
Every batch of down used by IceFlame is independently tested by IDFL, the world’s leading down testing institute. This eliminates supplier fraud and ensures every fill meets strict quality standards.
IceFlame
01
100% Batch Testing
IceFlame
02
Fill Power Performance
IceFlame
03
Historical IDFL / RDS Documentation
DATE: FROM 13 Oct 2025
According to the test results, the 850FP down has an actual measured loft of 860FP for this batch.
DATE: FROM 29 Apr 2026
According to the test results, the 900FP down has an actual measured loft of 915FP for this batch.
DATE: FROM 17 May 2024
According to the test results, the 800F goose down fluffiness of this batch is 810FP
DATE: FROM 24 May 2024
According to the test results, the 900F goose down fluffiness of this batch is 910FP
Odor Control
Our NXT and EX series use down sourced from mature birds (100+ days), resulting in naturally low odor and superior cleanliness.
RDS Certification
Using RDS-certified down adds significant cost, and we always strive to source responsibly whenever possible. However, for certain high-end fills—such as 900FP down—large-volume purchasing is not feasible, and the cost of obtaining RDS certification can exceed the value of the down itself. For this reason, 900FP down is extremely difficult to certify under the RDS standard.
At present, the 850FP / 900FP Muscovy duck down used in our products is fully RDS-certified.
Certification History
2024: CUC03742591
2025: CUC04014557
2024: CUC03613713
Fill Power Index
IceFlame sources its down from exceptionally cold regions, where harsh climates allow geese to grow dense, high-loft clusters that deliver outstanding warmth and long-lasting performance.
According to testing by IDFL (International Down and Feather Testing Laboratory), IceFlame down naturally achieves 820FP (92% white goose down) and 700FP (85% white duck down) without any chemical boosting. We firmly oppose the use of chemical additives to artificially inflate fill power—a common practice in low-cost products—not only because these effects fade after limited use, but also because such treatments are harmful to the environment.
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