Peak Design Outdoor Backpack Zip 18L Eclipse Summary
A compact and lightweight frameless daypack ideal for day hikes, hydration, and commuting, the Outdoor Backpack 18L has all the comfort and versatility of our larger packs, but with a simplified design and aesthetic that feels at home on or off the trail. Designed to work seamlessly with Peak Design’s wide array of Packing Tools*, which let you dial in your protection and organization for any gear—including your camera equipment.
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. Add the optional padded, quick-attaching, hyper-adjustable Hip Belt* for additional support, storage, and Capture* attachment options. 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.
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. 2 roomy external stretch pockets provide storage for oft-accessed stuff (water bottles, hiking poles, jacket, tripod, etc.) 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 1 Smedium Camera Cube. Designed for light single-day adventures. Want something bigger? Try the Outdoor Backpack 25L or 45L
*Accessories sold seperately. Access
– Massive rear panel accessible via a burly #8 weatherproof UltraZip™
Harness & Comfort
– Greater comfort with low-profile padded vest-style straps that distribute weight better and provide quick-access storage
– 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
– Available quick-attaching, hyper-adjustable padded Hip Belt (with storage and Capture Clip attachment point) sold seperately
– Padded back panels with center airflow channel
– Breathable, quick-drying perforated foam padding on back panels, shoulder straps
Internal Carry
– Hydration sleeve (with bladder attachment loop) can be converted to laptop sleeve for up to 16″ Macbook Pro
– Hydration hose pass-through prevents water ingress
– Totally customizable modular internal storage with Peak Design Packing Tools (sold seperately)
– Removable key tether can be relocated to different pockets
External Carry
– Plenty of room for water bottles, hiking poles, tripods, and other long items on the sides
– 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 a Smedium-sized Peak Design Camera Cube (sold separately)
– Ideal for kits up to mirrorless/DSLR body and 3-4 lenses
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
– Smaller total capacity
– 20% lighter
– Simpler aesthetic profile
– No rolltop access or expansion (rear access only)
– External Flex Pockets replaced with 2 seperate side pockets Fitment:
Fits torso sizes from 17-20″ (43-50cm)
Fits waist sizes from 24-52″ (61-132cm)
External Dimensions
47.6cm x 27.5cm x 15.5cm (18.74″ x 10.83″ x 6.10″)
Internal Dimensions
47.1cm x 27.0cm x 15.0cm (18.54″ x 10.63″ x 5.91″)
Capacity
18L
PD Camera Cube Capacity
Fits 1x Smedium Camera Cube, with option to place X-Small Camera Cube above it
Not compatible with Small, Medium, or Large sizes
Hydration/Laptop Carry
1x internal hydtration sleeve
Pass hydration hose through main rear zip
internal sleeve fits up to 13″ MacBook Pro
Weight
879g (1.94 lbs)
Materials:
– Ultralight Terra Shell™ 210D ripstop exterior fabric is weatherproof, 100% recycled, and Bluesign approved
– Internal PU coating – exterior rated at 1500mm hydrostatic
– PFAS-free water-repellant treatment is a more eco-friendly option to standard DWR
– Super-durable #8 and #5 weatherproof UltraZips™ with abrasion-resistant UHMWPE thread
– All cording made from ultra high-strength UHMWPE for extended durablity
– Blended nylon and UHMWPE stretch mesh pockets
– Breathable nylon mesh harness and backpanel
– Bluesign certified nylon webbing
– Nylon Cord Hook™ and strap adjustment hardware
– High-strength custom aluminum hardware for harness and strap adjustment
What’s in the Box
| 1x Outdoor Backpack 18L 2x Cord Hook™ Gear Loops 2x Cord Hook™ External Carry Cords 1x Key Tether 2x Sternum straps Note: Hip Belt sold seperately |













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