Mountainsmith - Zerk 40 Backpack - Darknight

The Mountainsmith Zerk 40L features a rolltop closure to keep gear secure and dry during unpredictable weather. The streamlined 40-liter capacity delivers carrying power without excess bulk. Padded shoulder straps and ventilated back panel reduce fatigue on long hikes. Perfect for commutes and weekend adventures with reliability on every trail and street.

Features

• Roll top closure with opposing SR buckles for self closing roll top or for side panel attachment with removable straps
• Extra wide shoulder straps with dual adjustable sternum straps
• 4 Large mesh front pockets on shoulder straps (2 per side) accommodate 500ml bottles, bear spray, cell phones, gps units, etc
• Airflow EVA foam padded shoulder straps
• Modular side compression straps (removable) for securing load throughout entire pack or discarding entirely
• Customizable and removable front panel bungee system
• Removable 1.5” waistbelt with Gatekeeper attachment hardware.
• Large main compartment holds up to 40 liters of gear with extra 4L storage in roll top area
• Expansive front stretch mesh pocket made with ultra durable Spundura (w/ UHMWPE grid) for hauling bulky gear
• Reflective bungee and select webbing hits for increased visibility
• Removable interior frame sheet (EVA / Atilon)
• Dual side water bottle pockets made with ultra durable Spundura (w/ UHMWPE grid) stretch mesh and angled openings for easy access
• Adjustable over-the- top V-shaped compression strap with SR buckle closure
• Hydration bladder sleeve with hose port (Bladder Not Included)
• Bright yellow lining promotes visibility

Specifications

• Materials: 210d Robic® Nylon X-Grid Extreema (UHMWPE) R/S UTS*, 100d Robic® Nylon X-Grid Extreema (UHMWPE) R/S UTS*, Spundura Stretch Mesh (w/ UHMWPE grid)*, 150d High Density Poly Liner*, YKK® Zipper, EVA Foam
• 12” x 20” x 9” (L x H x D)
• 2441 in3 / 40 L
• 2685 in3 / 44 L (Extended Roll Top)
• Waistbelt Size Range: 28"-48"
• Torso Range: 16"-21"
• Weight Load: Suggested up to 30 lbs
• 2 lbs 2 oz / 0.97 kg
• 1 lb 14 oz / 0.86 kg (Stripped)