The Eberlestock Mainframe & Brooks 3500 Complete Backpack brings modular performance to mid-volume missions. Whether you're out for a couple of nights or hauling essential gear into the bush, this system delivers rugged utility in a streamlined package.

The Brooks 3500 strikes the perfect balance between capacity and agility. With 57 litres of storage, roll-top expandability, and both front and bottom compression, it's built to adapt to your load. The stretch zippered side pocket and dual front stretch pockets keep your must-haves within easy reach, while the locking buckle compression straps secure your gear through rough terrain. Built from durable materials and EMOD-compatible, it’s the go-to for hunters, hikers, and mountain adventurers alike.

Packed with comfort-focused features like an integrated meat shelf, pull-forward hip belt, and an adjustable harness system, the MOD Mainframe provides the structure and support to carry serious weight with stability and ease. From custom gear layouts to seamless rifle carry, this is modular performance at its finest.

Brooks 3500 Pack Features:

• Volume: 57L / 3500 cubic inches
• Weight: 0.85 kg (1 lb. 15 oz.)
• Dimensions: 91.4 cm (H) x 26.7 cm (W) x 22.9 cm (D)
• Locking Buckle Side Compression Straps: Secure and stabilise your load during movement
• Front & Bottom Compression Straps: Enhance pack stability and help manage shifting weight
• Roll-Top with Front Zipper Access: Flexible loading options and expandable capacity
• Stretch Zippered Side Pocket: Convenient storage for bottles or quick-access items
• Two Front Stretch Pockets: Keep extra gear or wet items separate and easy to reach
• Internal and External Compression: Streamlines your profile and locks in contents
• Durable Construction: Built to endure tough alpine environments
• Lightweight Design: Reduces fatigue and increases freedom of movement
• EMOD Compatible: Integrates with Eberlestock’s modular accessories and systems

MOD Mainframe Features:

• Meat Shelf: Integrated and adjustable with compression straps to secure heavy loads
• Frame Material: Rugged aluminium construction built for durability
• Strap System: Locking compression straps for secure load control
• Quick Attach Buckles: Side-release buckles allow repositioning along webbing loops
• Load Lifters: Improve weight distribution and load carriage over long distances
• Hip Belt: Pull-forward design with laser-cut MOLLE for modular accessory attachment
• Lumbar Padding: Adjustable for tailored back support and comfort
• Shoulder Harness: Fully adjustable for different body types and personal fit
• Rifle Compatible: Compatible with the A2LS rifle scabbard (sold separately)
• EMOD Compatible: Fully integrates with all Eberlestock modular components
• Weight: 2.04 kg (4 lbs. 8 oz.)
• Dimensions: 66 cm (H) x 25 cm (W)