The Osprey video posted by Link says the main pack fabric is 210 denier high density nylon with a polyethylene gridstop. Amidst conflicting reports, I’d lean toward the manufacturer’s rep, for specs anyway. For the pack weight, that is a fairly beefy fabric weight of best quality nylon, and the gridstop will add to it. Would love to get my hands on some of that material.
It is also a nice looking pack, with a few drawbacks. If using the open top side pockets for bottles and other items not affected by water, as one video points out, the pocket material should be more elastic for easy access.
The rep advises that since there will be a light load in a light pack, the light hip belt is not a problem. But it is a 45L pack, for an SUL hiker good for a week with food, and could weigh in the 25-30 lb range in the first day or two. That is too much weight for a daypack hip belt.
There were some shots fired at the top cover – “I wonder how much weight they could have saved without the top lid? Why does anyone still prefer those over a roll top?”
No math needed to see that a lid has less yardage than a roll top. And why would anyone prefer to use a dry bag for a pack? Waste of fabric/weight and not much to offer re: organization and access of/to equipment. Have used dry bags a lot on trips combining kayaking and hiking loops, and with a good water resistant pack, never had a need to bring a dry bag or bag cover on the hiking leg to keep everything dry. Maybe if you enjoy slot canyons and might get swept away. I don’t, and won’t.
To be fair, the addition of a full suspended mesh backband and supporting frame will add significantly to the weight of any pack.
I think that if the hipbelt/suspension were beefed up, the side/shovel pockets made elastic, and if the pack fabric is as durable as claimed, this would be a great light weight pack. But would not buy any pack without first trying it on carrying the expected weight. There are often uncomfortable surprises.