OUTDOOR BACKPACK 45L: Designed to handle it all without forcing you to make sacrifices, the 45L Outdoor Backpack is light, functional and comfortable for any journey. It's everything you need in a technical backpack, and nothing you don't. EVERYDAY VERSATILITY: A hiking backpack that moonlights as a travel bag. The hydration sleeve features a hose pass-through up top for seamless trail-to-travel transitions and converts into a laptop pocket (fits up to a 16" MacBook Pro). MODULAR BY DESIGN: Built to adapt, this pack pairs perfectly with Peak Design Packing Tools like our Camera Cubes or Ultralight Packing Cubes. Customize your carry – whether it's trail, tech or travel – without wrestling with your setup. BUILT TO ROAM: Vest-style load-lifter straps take the weight off your shoulders, offering balanced carry and quick-access storage. Made from weatherproof, abrasion-resistant Terra Shell fabric that’s 100% recycled and Bluesign approved. RADICAL PRODUCTS, RADICAL COMPANY: Peak Design creates industry-shifting, lifetime-lasting gear with a mission to leave the world better than we found it. No investors, no venture capital – just innovation on our terms. No two outdoor trips are the same – your gear, environment, and needs are always changing. The Peak Design Outdoor Backpack 45L incorporates innovative features that just work, so you can spend more time enjoying the outdoors and less time wrestling with your gear. Perfect as a hiking backpack, commuter bag or for longer trips, this backpack offers a lightweight, internally-framed design for ultimate comfort and performance Featuring an Ultra Cinch roll top and rear access panel with full zip access to the rear of the bag, convenient pockets inside and out, a removable, stowable, highly-adjustable Hip Belt, and a hydration sleeve that doubles as a laptop sleeve, this 45L Peak Design backpack keeps your gear organized and easily accessible. It integrates seamlessly with Peak Design’s Camera Cubes, allowing you to convert it into a camera bag in an instant. With its durable, weatherproof construction and modular design, this lighter, more functional and more comfortable backpack provides a streamlined solution for every adventure, big or small.