Smartwool Merino Boxer Brief Boxed - Deep Navy, Size S

Hit the trail or the office in the Smartwool Merino Boxer Brief Boxed. Built for active men who demand comfort without compromise, these boxer briefs combine the natural performance of merino wool with a tailored slim fit. The deep navy color keeps things understated, while the functional fly and flatlock seams ensure all-day ease.

Key specifications

• Material: 87% Merino Wool, 13% Nylon
• Fabric weight: 150 g/m²
• Fit: Slim
• Waistband: Covered elastic
• Fly: Functional
• Seams: Flatlock to prevent chafing
• Odor resistance: Natural merino wool
• Moisture wicking: Yes
• Temperature regulation: Yes
• Breathability: High
• Technology: Core Spun Technology
• UV protection: UPF 20+
• Care: Machine wash cold, tumble dry low

Why choose it

Merino wool is nature's performance fabric—it wicks sweat, resists odors, and adapts to your body temperature. The nylon blend adds durability, so these boxer briefs hold their shape through countless wears and washes. The slim fit provides support without restriction, and the flatlock seams eliminate irritation on long hikes or long days.

Ideal use cases

• Hiking, backpacking, and trail running
• Travel—merino stays fresh for multiple wears
• Everyday comfort in any climate
• Layering under ski or snowboard pants

Good to know

Smartwool's Core Spun Technology wraps merino fibers around a nylon core for added strength and next-to-skin softness. The covered elastic waistband stays put without digging in. For best results, machine wash cold and tumble dry low—avoid bleach and fabric softeners to preserve the wool's natural properties.