Backcountry Labor Day Sale: 2024 Gear Guide – Switchback Travel August 27, 2024 Bryan Delay Articles Osprey Men's Exos 38L and Women's Eja 38L Backpack. Osprey Exos 38L backpacking pack. Osprey is one of the biggest names in backpacking, and their … Source: Backpacking & Water Filtration