Outdoor Backpack - Open Box, 25L / Eclipse

Peak Design Outdoor Backpack — The Adventure Photographer's Carry-On

The gist: A modular, camera-ready hiking pack built for travelers who refuse to check a bag — the 25L clears airline carry-on rules on most carriers, and the 45L handles multi-day hauls with an internally framed structure that won't collapse under gear weight.

• Ultralight build: The 25L weighs just 2.54 lb (1.15 kg) in 210D Terra Shell™ ripstop nylon — light enough for full-day city walks or trail runs between gates.
• Weather resistance: PFAS-free TPU coating on the front and base panels sheds rain; the rolltop closure adds an extra barrier when conditions turn.
• Carry-on friendly: The 25L measures 20" × 12" × 7" and earns an 84% carry-on compliance score at Pack Hacker — fits overhead on most international routes without needing to compress.
• Modular camera system: Internal cord rails and the Peak Design Packing Tools ecosystem let you swap from hiking mode to a camera-cube configuration without repacking.

Pack Hacker praised the "really comfortable harness system with useful pockets on the shoulder straps," giving the 25L a 7.7/10 and noting its dual rolltop-plus-zipper access as a standout for multi-use adventurers.

Best for: Adventure photographers, digital nomads doing carry-on-only travel, and outdoor enthusiasts who want one bag from the trail to the hostel. Skip it if: You need a simple, strap-free daypack — the abundance of loops, cord rails, and removable parts adds complexity that casual hikers won't use. Runs ~$149–$300 — check the current price before buying.