Mammut Sertig III Mid GTX Women's Waterproof Hiking Boots – Black

Hit the trails at pace in the Mammut Sertig III Mid GTX, a women's-specific mid-cut boot built for fast hiking and trail running on technical singletrack. Whether you're powering through damp forest paths or scrambling up rocky ascents, the athletic fit and generous toe spring keep you moving efficiently. The GORE-TEX Extended Comfort membrane seals out water while letting feet breathe, and the grippy Mammut Swiss Design outsole bites into loose gravel and wet roots. With a 7 mm drop and trail-running last, it delivers a natural, responsive ride from trailhead to summit.

Key specifications

• Upper: Synthetic mesh with TPU reinforcements
• Lining: GORE-TEX Extended Comfort Footwear
• Outsole: Mammut Swiss Design rubber blend
• Midsole: EVA foam for cushioning
• Waterproof and breathable membrane
• Heel-to-toe drop: 7 mm (heel 26 mm, forefoot 19 mm)
• Weight: 640 g per pair (approx. UK 5.5)
• Closure: Laces
• Flex index: A4 (Trail Running)
• Last index: Trail Running

Why choose it

The Sertig III Mid GTX lives up to its name with a balanced ride that feels natural on rolling terrain. Its GORE-TEX membrane keeps wet grass and puddles out, while the grippy outsole delivers reliable traction on loose gravel and damp roots. Plus, the boot includes recycled materials and a PFC-free DWR finish, so you can enjoy the outdoors responsibly.

Ideal use cases

• Fast hiking on alpine trails
• Trail running on mixed ground
• Multi-sport adventures

Good to know

With an athletic fit and a trail-running last, this boot suits narrow-to-standard feet and encourages an efficient, mid-foot strike. If you're planning short, high-intensity outings, the Sertig III Mid GTX is a versatile companion that transitions effortlessly from a fast hike to a trail run.