"Navajo weaving talent gives all your soldiers superior garb, granting them all more hitpoints."—In-game description
Navajo Weaving is a technology in Age of Empires III: The WarChiefs that can be researched at a Trading Post built on a Navajo settlement. Once researched, it increases the hit points of infantry, including light infantry, and cavalry by 5%.
Navajo Weaving is not very effective by itself due to the low number of hit points it provides, though it can be stacked with Home City Cards and improvements that increases hit points for the affected units.