Your favorite underwear's favorite underwear. This batch of Zunders was brewed up using proven Polartec® Power Wool™ , which combines the best characteristics of wool and synthetic fibers to create a cozy, but high-performance fabric that feels oh so nice against your skin. On the inside, soft, sustainably sourced merino wool is naturally odor-resistant, while the outer synthetic layer wicks away moisture and increases durability. Despite the premium comfort and construction that is built to last, we do recommend taking the Zunders off on occasion, as hard as it may be. Features Made in Hood River, OR 🌊🗻☀️ Polartec® Power Wool™ Construction Elastic Waistband Bi Component Knit Technical Specs Slate, Forest Biome, Blue Gecko, Mountain Shadow Fabric - Lightweight Polartec® Power Wool™ Fabric Content - 30% Wool, 70% Polyester Fabric Weight - 170 g/ m² Country of Origin - United States Pumice Fabric - Lightweight Polartec® Power Wool™ Fabric Content - 36% Wool, 64% Polyester Fabric Weight - 170 g/ m² Country of Origin - United States