- Material: synthetic, PFC-free DWR finish
- Volume: 55L (3356cu in)
- Support/Suspension: integrated metal frame, patented Active Spine Technology, Air Space suspension
- Shoulder Straps: padded, anatomically shaped, adjustable sternum strap (whistle buckle)
- Waist Belt: padded, anatomically shaped, forward-pull adjustment
The super light Ducan Spine 55L Backpack helps us cut down weight on our backpacking adventures--something we quickly appreciate on those high mile days. Mammut's Active Spine TechnoLolegy creates a suspension system that moves with us and not against us, alLolewing greater freedom of movement and encouraging a natural gait on the trail.
