Hey, if you are looking for a lightweight pack, I would suggest that you check out the Andinista Pack Mil manufactured by Wild Things Gear (https://www.wildthingsgear.com/collections/clearance-sale/products/andinista-pack-mil). I have the smaller version (Guide Pack Mil) for day hikes, but its a tough pack, made of waterproof material, and is extremely lightweight. Its also 100% made in the USA. If you are interested, I would check it out now because its 40% off.

As I said, I have the smaller version and it is one of my favorite pieces of gear. I used it as my day pack on Mt. Kilimanjaro (7 day trip). It performed really well...I can only assume the larger version would be a great piece of gear also.

Enjoy your trip!