Mammut Runbold IV Pants

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Light, breathable, and impressively mobile, these trousers are made for covering ground when the weather is on your side.

Mammut says: 

From our best seller collection, these hiking pants deliver comfort with all the practical features you need on the trail. These pants feature 4-way stretch for freedom of movement on uphill hikes and across alpine terrain. The adjustable waistband provides a perfect fit, and four zipped pockets keep essentials in place. The latest design has a lower footprint thanks to the use of recycled material in the fabric. The Runbold IV Pants deliver lightweight comfort and function for exploring above the treeline.

All Mammut products purchased within the Europe come with an extended 30-month warranty period. For more details click here.

Our Verdict

The Mammut Runbold IV Pants offer excellent freedom of movement thanks to their four-way stretch and slim, active fit. At 209g in medium, they’re well-suited to warm-weather hikes where comfort and breathability are key. The hook-and-loop waist adjustment is a real highlight—it lets you fine-tune the fit without needing a belt, which is especially useful on longer trips where your waistline may fluctuate, though it can chafe a baselayer. The fabric dries quickly, wicks moisture well, and has enough structure to avoid that flimsy feel. Storage is generous and practical, with two side pockets, a thigh pocket, and one at the rear, all secured with low-profile zips.

They’re not built for foul weather but for dry trails and high ridge-top climbs; they perform confidently without getting in the way.

– Reviewed by Ultralight Outdoor Gear

Features

• Quick-drying and breathable
• Reliable protection from strong sunlight
• Belt loops
• Waistband adjustment for a perfect fit – can be adjusted from the outside
• Two zippered side pockets
• Zippered leg pocket
• Seat pocket with zipper
• Durable, high-stretch polyamide material with spandex for freedom of movement
• Wicking finish for moisture management

Specifications

• Small (30″ waist) weighs: 198g
• Medium (32″ waist) weighs: 209g
• Large (34″ waist) weighs: 215g
• XLarge (36″ waist) weighs: 220g

Material & Construction

• Recycled
• bluesign® PRODUCT
• Fair Wear

Help & advice:

• Recycled Content in Outdoor Gear
• The Bluesign System