The Peak Design Outdoor Backpack Zip 18L Eclipse is a compact and lightweight frameless day pack for hikes and photography outings when you add the Medium Camera Cube. Designed for day hikes, commuting, and activities, the Outdoor Backpack Zip 18L packs comfort and adaptability into a compact, frameless design. It features a large rear access panel, abrasion-resistant recycled materials, and a streamlined profile that suits both trail and urban use. With modular gear carry and hydration compatibility, it's small in size but big on functionality.