ALPS Mountaineering Caldera 75 – Gray

75L Expedition Backpack for Multi-Day Trekking & Backcountry Travel

Quick Facts

Capacity: 75 L / 4575 in
Weight: 5 lb 11 oz
Torso Range: 15.5 in 20.5 in
Waist Belt Range: 32 in 51 in
Fabric: 200D nylon double ripstop
Frame: Dual aluminum frame stays
Hydration Compatible: Yes
Rain Cover: Integrated, side storage pocket
Access: Top loading with front access and lower compartment

Product Description

The ALPS Mountaineering Caldera 75 is a high-capacity backpack designed for extended backcountry travel and multi-day trekking. Constructed from lightweight double ripstop nylon and supported by dual aluminum frame stays, the pack delivers the structure and durability needed to carry heavier loads over long distances.

A large main compartment with internal divider keeps gear organized while multiple access points allow quick retrieval of equipment without unpacking the entire bag. The expandable top lid can be removed and converted into a waist-mounted fanny pack, giving you a lightweight carry option for short excursions away from camp.

With hydration compatibility, integrated rain protection, and a fully adjustable suspension system, the Caldera 75 provides the capacity and comfort needed for demanding backpacking trips.

Built for Multi-Day Backpacking & Expedition Travel

Large 75L Capacity
Designed to carry extended-trip gear for backpacking, trekking, and expedition travel.

Dual Frame Support
Dual aluminum frame stays improve load stability and distribute weight across the suspension system.

Multiple Access Points
Top loading design, front access zipper, and full lower compartment access make gear retrieval fast and efficient.

Convertible Top Lid Pack
The removable top lid converts into a fanny pack for short hikes or trips away from base camp.

Integrated Weather Protection
An included rain cover stores in a side pocket and deploys quickly during wet conditions.

Features

Lightweight 200D nylon double ripstop construction
Removable sternum strap with rescue whistle buckle
Pull-forward tightening waist belt
Shoulder strap padding wraps to the back for added comfort
Internal horizontal divider for gear organization
Generous front access zipper to main compartment
Full-access lower compartment with #10 zipper
Top loading design with expandable lid
Removable top lid converts to fanny pack
Over-the-top compression strap and multiple side compression straps
Spindrift collar with draw cord
Front stretch pocket for quick-stash gear
Front wing lashing system for external gear carry
Traditional trekking pole loops
Stretch side bottle pockets
Hydration reservoir sleeve with dual hose ports
Air mesh covered suspension for airflow and ventilation
Removable padded waist belt with pockets
Small harness option available
Small and XL waist belt options available

Specifications

Model: Caldera 75
Product Number: 2433811
Color: Gray

Capacity: 75 L / 4575 in

Weight: 5 lb 11 oz

Torso Range: 15.5 in 20.5 in

Waist Belt Range: 32 in 51 in

Fabric: 200D nylon double ripstop

Frame: Dual aluminum frame stays

Hydration Compatible: Yes

Rain Cover: Included, stored in side pocket

FAQ

What type of trips is the Caldera 75 designed for?
It is best suited for multi-day backpacking trips, extended trekking routes, and expedition-style travel.

Can the top pocket be used separately?
Yes. The removable top lid converts into a waist-mounted fanny pack for short trips from camp.

Does the pack include rain protection?
Yes. An integrated rain cover stores in a side pocket and can be deployed quickly when needed.

The Caldera 75 provides the capacity, durability, and flexible access needed for long-distance backpacking and extended backcountry adventures.