The chin strap is cracking and deteriorating (see photos)
That makes it easy to pin where fish hold and to land the bigger game
Small front pocket with key clip
In fact, the magic of this region one thats shared by both Chile and Argentina is so surreal that its easy to Google hikes in awe and plan photo ops in earnest while completely forgetting the nitty gritty of what to bring

Features: Large panel-loading main compartment Attaches to a variety of compatible Osprey packs Multifunctional padded interior sleeve for hydration reservoir, up to 14" laptop or tablet Dual side compression straps Dual water bottle side mesh pockets Front pocket with organization and key clip Harness grab handle doubles as a luggage pass-thru CARRY INFORMATION: Backpanel: AirScape mesh-covered die-cut ridged foam provides comfort and ventilation Harness: Spacermesh-covered EVA foam padded harness with integrated grab handle Adjustable sternum strap with whistle Hipbelt: Removable webbing hipbelt Materials: Main Body Fabric: bluesign APPROVED, 100% recycled 300D polyester w/ ripstop, DWR treatment made without PFAS Bottom Fabric: bluesign APPROVED, 100% recycled 600D polyester packcloth, DWR treatment made without PFAS Main Liner Fabric: bluesign APPROVED, 100% recycled 200D polyester, DWR treatment made without PFAS Specifications: Size: O/S Gender: Unisex Weight: 1.29lbs Dimensions: 18.9x11.02x9.45 in Volume: 20L WARNING: This product can expose you to chemicals including dimethylformamide, which is known to the State of California to cause cancer

The back panel, as well as the shoulder straps, have an air ventilating system with mesh all over it