Cirque 50 Backpack

Engineered for technical alpinists, ski mountaineers, and expedition guides tackling multi-day high-altitude ascents, the Cirque 50 Backpack-Black Diamond provides maximum volume without compromising movement efficiency. Featuring a weather-resistant roll-top closure, dedicated avalanche safety tools pocket, and external skin/ski crampon access, this pack handles extreme alpine conditions. Integrated A-frame ski carry straps, a top rope strap, and a quick-deploy PickPocket™ ice tool system ensure rapid gear deployment during technical ridge traverses, winter expeditions, and glacier approaches. Shop online at Makalu e-traders or visit our physical store in Thamel. 

Cirque 50 Backpack-Black Diamond  Features

• Roll-Top Closure System: Weather-tight roll-top main compartment entry that adjusts volume dynamically.

• Dedicated Avalanche Safety Pocket: External-access pocket specifically designed for probe, snow shovel, and alpine safety gear.

• PickPocket™ Ice Tool Carry: Quick-deploy piolet and ice axe attachment system for secure carry during technical climbs.

• Dual Ski & Snowboard Carry: Integrated A-frame ski carry, diagonal ski carry, and snowboard attachment points.

• Aluminum Frame Stay: Internal aluminum back panel stay combined with load lifters to stabilize heavy expedition loads.

• Pulk Sled Attachment Points: Integrated hip belt loops engineered to tow pulk sleds on extended polar or high-altitude glacier approaches.

• Stowable Helmet & Rope Carry: Removable helmet holder system plus a dedicated top compression strap for secure rope transport.

Technical Specifications

Physical Dimensions & Weight

• Volume: 50 L

• Weight (S/M): 1.36 kg (1,360 g)

• Weight (M/L): 1.37 kg (1,370 g)

• Torso Fit (S/M): 41 – 48 cm (16 – 19 in)

• Torso Fit (M/L): 47 – 55 cm (18.5 – 21.5 in)

• Waist Circumference (S/M): 66 – 102 cm (26 – 40 in)

• Waist Circumference (M/L): 71 – 114 cm (28 – 45 in)

Material Composition

• Primary Shell Body 1: 93% Nylon, 7% PE (210D Nylon with Dynex® Ripstop Grid)

• Secondary Shell Body 2: 100% Nylon

• Lining Fabric: 100% Polyester

• Internal Support: Formed Aluminum back panel stay

• Finish Treatment: PFC/PFAS-free DWR (Durable Water Repellent) coating

Performance & Configuration

• Access System: Top roll-top main entry + quick-access side crampon/skin pocket

• Carry Options: A-frame ski carry, Diagonal ski carry, Snowboard carry, Top rope carry

• Ice Tool Integration: PickPocket™ dual piolet/ice axe sleeve

• Hydration System Compatibility: Internal hydration reservoir sleeve and port