This high quality material is used for guide backpacks

MOLDED EVA

As with all sleeping bag liners

Stows away in the tiniest nylon pouch

Gregory Arrio 22 Backpack Color:Brick Red This high quality material isStay cool and comfortable with the Arrio 22, with a built in hydration attachment and routing system plus a ventilated backpanel. Multiple quick access pockets and a streamlined silhouette keep all your essentials where you need them so you can focus on the view. FreeSpan suspended open air mesh backpanel keeps you cool and comfortable on the trail Panel loading, zippered main pack access Perforated, breathable shoulder harness with built in hydration