These Altitude Heavy Duty Merino Boxers combine the comfort of lightweight merino underwear with extra durability where you need it most. Made from superfine Australian Merino with MicroMerino® fabric, they’re soft, breathable, and naturally moisture-wicking—perfect for everyday wear or active adventures.
Comfort & Fit: Mid-rise with tag-free labels, flatlock stitching, and a flexible, ultra-soft ioMerino waistband to reduce chafing and bulk. Self-fabric fly adds comfort and function.
Durability: Reinforced crotch panel made from the same merino fabric as our Ultra range, providing extra strength without sacrificing comfort.
Merino Benefits: Soft, temperature-regulating, moisture-wicking, and odour-resistant.
Material & Stretch: 83% Merino Wool / 12% Nylon / 5% Elastane (main body, 160gsm), 96% Merino Wool / 4% Elastane (inseam, 170gsm) for lightweight comfort with all-way stretch.
Great for: Everyday wear, sports, travel, or layering under other garments.
