Mammut Ducan Spine 28-35 vaellusreppu – silver sage/musta

On a multi-day trek through rugged terrain, the Mammut Ducan Spine 28-35 moves with you. Its Active Spine Technology™ pivots with your body, reducing fatigue and keeping the load balanced on uneven ground. The expandable volume from 28 to 35 liters adapts to your gear needs, whether you're packing light for a fast hike or carrying extra layers for changing weather. The silver sage and black colorway blends understated style with trail-ready function.

Key specifications

• Volume: 28–35 L (expandable)
• Weight: 1.42 kg
• Dimensions: 62 × 28 × 24 cm
• Material: 100% Polyamide (210D Nylon main, 420D Nylon base)
• Back system: Mammut Active Spine Technology™
• Hydration compatible: up to 3 L
• Rain cover: integrated and detachable
• Access: top loader with large front zipper
• Pockets: 2 mesh side, 2 zippered hip belt, front zippered, lid (internal & external)
• Attachment points: speed trekking pole attachment, gear loops
• Frame: integrated spring steel
• Ventilation: excellent back ventilation
• Adjustability: adjustable sternum strap and hip belt
• Sustainability: PFC-free DWR, Fair Wear product
• Closure: drawstring with adjustable lid
• Additional: compression straps, key clip

Why choose it

The Ducan Spine 28-35 stands out with its Active Spine Technology™, which allows the pack to follow your natural movement, reducing strain on long hikes. The expandable volume offers flexibility for day hikes or light overnight trips, while the integrated rain cover and durable materials ensure protection in all conditions.

Ideal use cases

• Multi-day trekking and thru-hiking
• Fastpacking and lightweight overnight trips
• Day hikes with variable gear needs
• Approach hikes and alpine scrambles

Good to know

This backpack is a Fair Wear product, ensuring ethical manufacturing. The PFC-free DWR treatment provides water resistance without harmful chemicals. The Active Spine Technology™ is designed to reduce energy expenditure by up to 5%, helping you stay fresher on long trails.