Take on adventure with the Osprey Packs Sportlite 20L Backpack. It is made of bluesign® approved, 100% recycled 100D high-tenacity nylon that has been treated with DWR to help repel water. The panel loading design makes it easy to access, and its internal hydration sleeve holds the included 2.5-liter reservoir to help you stay hydrated on the go. The flexible, vented EVA shoulder straps have a smooth spacer mesh contact surface. Osprey Packs Sportlite 20L Backpack Black/Dark Grey - Technical Packs at Academy Sports