IDFL’s Matt Lieber explains how a Composition and Species Analysis works, showing a real-world analysis of KUIU’s Quix Down. Matt lays out why you care whether your jacket is made of goose or duck down, and why the down cluster percentage tells you about the quality and cleanliness of your jacket’s down fill.
innovation
What's In Your Down?
By KUIU Team• October 14, 2026
