DURABLE DETAILS, CLEAN DESIGN: A weatherproof 400D recycled nylon canvas shell with ultra-durable hardware stands up to the rigors of travel. The burly #10 UltraZip and reinforced bottom liner add lasting durability in a sleek, minimalist silhouette. No two trips are the same, and the Peak Design Travel Backpack 45L is built to handle them all. A larger sibling of our 30L pack, this adaptable carry-on offers more capacity, more access, and the same rugged reliability. Top, side, and full rear-panel entry points give you multiple ways to pack and grab gear on the go. A soft-lined top pocket keeps essentials like glasses, keys, and passports close at hand, while the main cavity can be divided using a zippered mesh sleeve. Inside, padded sleeves protect your laptop and tablet, and internal mesh pockets keep the rest organized. Expand from 35L to 45L when you need more room. Tuck-away shoulder straps and a stowable hip belt streamline the exterior, and a luggage pass-through makes airport transitions easy. Built with a weatherproof 100% recycled 400D nylon canvas shell and abrasion-resistant UltraZip. Works seamlessly with Peak Design Packing Cubes, Pouches, and Camera Cubes. Whether you're looking for carry on luggage or a commuter bag, this backpack adapts to how – and where – you carry.