With a minimalist, value-focused design, the Osprey Sportlite Hydraulics 15 delivers reliable performance. A streamlined, durable build makes hiking a breeze, with essential features to provide just what you need. This evolution of the beloved Osprey Sportlite series integrates a 2.5-liter reservoir for easy hydration. Constructed from bluesign® APPROVED, 100% recycled nylon main body fabric.