Osprey Packs Stratos 36L Backpack Seaweed/Matcha Green, One Size

With new geometry that caters to a wider variety of hikers, the Stratos 36L Backpack still offers the versatility that serious adventurers desire. Its improved AirSpeed back panel comes in one adjustable size and features more ventilation for breathable comfort on the trail. It's sized for all-day hikes with a hydration-compatible sleeve and two additional pockets for water bottles, and it's backpacking-ready for fast-and-light overnighters in the alpine.