For hygienic purposes, underwear is nonrefundable. Sorry for being so mean!
Our Men's Active Brief takes all of the tech you love from our Merino boxer briefs—a lightweight feel, breathability, anti-stink Merino—and adds a looser fit. With a fully functional fly and a wide, Merino-lined elastic waistband, you'll experience maximum comfort all day long. No matter if you're hitting the trail for a three-day camping trip or trying new sports, our Men's Active Brief brings you the performance and comfort you can expect from our ultra-soft, responsibly sourced Merino wool.
Fit: Slim
Fabric combines the moisture management, temperature regulation, and odor resistance of Merino with the durability and quick dry time of recycled polyester
Flatlock seam construction designed to minimize chafing
Wide elastic waistband designed for maximum comfort
Size Medium inseam: 4" (10 cm)
Avg Weight: 56g (1.98 oz)
Knit in Vietnam: 56% Merino Wool, 44% Polyester. Exclusive Of Decoration.
Style Variants
Available Colors: Black, Medium Gray
Size Reference for SmartWool Smartwool Men's Brief
Available Sizes: M, L, XL, XXL























