The Gregory Optic 48L Backpack is an ultralight pack for tackling the next thru-hike. AeroSpan suspension doesn't just vent the back panel, but also provides support to help keep the initial pack weight down, so you can still load it up. FocusForm in the shoulder straps and hip belt cushions and the Leaf-Spring lumbar pad transfers the load weight so you can further the miles. A place for just about everything, included the stowable rain cover and swappable ultra-light weather flap.
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