No two outdoor trips are the same—your gear, environment, and needs are always changing—and the Peak Design Outdoor Backpack 45L is a lightweight internally-framed backpack designed to handle it all without forcing you to make sacrifices.

From it's exquisitely comfortable harness system, to it's big, beautiful access points, to its totally customizable internal and external organization, the PD Outdoor Backpack 45L incorporates a ton of innovative features that just work, so you can spend more time enjoying the outdoors and less time wrestling with your gear. Designed to work with Peak Design's wide array of Packing Tools*, which let you dial in your protection and organization for any combination of clothes, provisions, camping gear, sport equipment, and camera gear—from a single camera/lens up to a full professional creative setup.

A uniquely versatile and low-profile harness and adjustment system gives maximum comfort to the most inclusive range of body types of any bag on the market. Vest-style straps take load off your arms and shoulders and distribute it across more of your body while also providing ideal quick-access storage and Capture Camera Clip* attachment points. A removable, stowable, hyper-adjustable padded Hip Belt provides additional support, storage and Capture Clip* attachment points. This bag is highly abrasion-resistant and functionally weatherproof thanks to it's Terra Shell 210D ripstop nylon fabric which is 100% recycled, Bluesign approved, and PFAS-free. An optional Rain Fly* provides full waterproof protection.

Other unique features include the proprietary Ultra Cinch roll-top access point for easy packing and unpacking, that allows lightning-fast 1-handed access and 10.5L of expansion. A huge rear access panel makes packing a breeze and also provides an ideal format for outdoor camera carry using Peak Design Camera Cubes* which securely clip inside the bag. 5 massive external Flex Pockets™ provide quick-access storage for large items (water bottles, hiking poles, jackets, tripods) yet always maintain a clean profile, never looking floppy or discheveled. Cord Hook™ external Carry Cords and elastic Gear Loops provide endless options for strapping things to the outside of your pack, and Cord Rails™ provide 360-degree attachment points. You can even attach Peak Design Ultralight Packing Cubes* for modular external storage. Fair Trade Certified and 100% carbon neutral.

Fits up to a Large Camera Cube. Designed for gear-heavy single-day adventures, or light overnight use. Want something smaller? Try the Outdoor Backpack 25L.

Features

Access

Brilliant Ultra Cinch roll-top design is fast and easy to open/close, exandable, and allows cinching items to the top of your bag
Massive rear panel accessible via a burly #8 weatherproof UltraZip
Harness & Comfort

Totally personalized fit & comfort for wide range of body types via innovative hyper-adjustable harness system
Greater comfort with low-profile padded vest-style straps that distribute weight better and provide quick-access storage
Load-lifter straps for weight balancing
Shoulder straps feature mesh storage pockets with hidden Capture Clip attachment points (clip sold seperately)
Dual quick-adjusting sternum straps for a more active and ergonomic fit (use both, one, or none)
Top grab handle
Stowable padded Hip Belt with mesh zip pocket (right) and a slip pocket + Capture Clip attachment point (left) v Hip Belt is quick-attaching with dual attachment points & adjustable webbing length to perfectly fit all body types
Resilient 3-part spring steel internal frame provides back and lumbar support that secure yet flexible when moving
Padded back panels with center airflow channel
Breathable, quick-drying perforated foam padding on back panels, shoulder straps, Hip Belt
Internal Carry

10.5L of expansion (34.5L min to 45L max)
Hydration sleeve (with bladder attachment loop) can be converted to laptop sleeve for up to 16" Macbook Pro
Hydration hose pass-through at top of bag
1x internal zip pocket for storage & protection of important items like passport, permits, etc.
Totally customizable modular internal storage with Peak Design Packing Tools (sold seperately)
Removable key tether can be relocated to different pockets
External Carry

5 massive external Flex Pockets provide expandable quick-access external storage
Unique Flex Pocket structure maintains a clean silhouette whether bag is full or empty, never looking floppy or discheveled
Plenty of room for water bottles, hiking poles, tripods, and other long items on the sides
Center Flex Pocket great for bulky things like jackets, doubles as an auxiliary hydration sleeve
2 weatherproof #5 UltraZip pockets for small items like map, compass (fits an X-small or XX-small Ultralight Packing Cube)
Cord Hook quick-cinching External Carry Cords (2x) let you carry items outdide of your bag
Cord Hook elastic Gear Loops (2x) provide an additional fast & simple external carry option
External Carry Cords and Gear Loops made from ultra-strong abrasion-resistant UHMWPE cord
Hidden Cord Rails let you mount external Carry Cords, Gear Loops, or other items nearly anywhere outside the bag
Use Carry Cords & Gear Loops for mounting Peak Design Ultralight Packing Cubes (sold seperately) for modular external storage
Use Carry Cords & Cord Rails to compress sides of bag for better load distribution
Photo/Video Gear Carry

Perfectly sized to work with Peak Design Camera Cubes (sold seperately)
Configure to carry anything from a single camera/lens to a full pro creative setup
Fits the following Camera Cube (V1 or V2) pack-outs:
1x Large
2x Smedium
1x Medium + 1x Small
3x Small
Protection & Care

Primary exterior fabric is ultralight Terra Shell 210D ripstop 100% recycled nylon
Secondary exterior fabric (front and bottom) is Terra Shell 210D ripstop with TPU coating (non-recycled)
PFAS-free water repelling treatment with interior PU coating
Bag is functionally weatherproof and has optional Rain Fly (sold seperately) for total waterproofing
Spot clean with warm water and mild detergent, hand-wash only
Fair Trade Certified and 100% carbon neutral
Differences vs. the 25L model

More capacity & top expansion (11L expansion vs. 3L)
More photo gear capacity (max load is Large Camera Cube vs. Smedium)
More support (internally framed vs. frameless, Hip Belt included vs. optional)
More harness adjustability (has shoulder height adjustment, 25L does not)
5 external Flex Pockets (3 on the smaller bag)
Has internal zip pocket
Has load lifter straps
*Accessories sold seperately.