So I got my Adventure Lion bag in the mail the other day and took it out to the waterfall. I got a green one. It's kind of an olive drab color. Packaging was standard Amazon, 2 day. I got the 10L
Out of the box impression: Feels like a nice solid material without lots of vulnerable creases. The buckles and straps don't feel cheap or crappy. The shoulder strap was really useful. I feel like if it didn't have a shoulder strap, I'd be using the buckle to hold the bag's weight which is never ideal. Not sure what other companies do to avoid this problem. The closure process is super simple, instructions printed on the bag.
In action: worked as advertised. It was moisture resistant throughout the drizzle, and then after I got to the waterfall I put it right in the spray, let it float some, gave it a dunk and all that. Everything dry after.
I used it to store my backup layering, wallet, and phone. Did so fairly comfortably. But I'll warn that the bags get a lot smaller after you roll them up. So the 10L is probably good enough for a light change of clothes and a few small possessions for one person. The 5L would probably be mainly phones and wallets. I'll probably pick up one of the 20L ones when they're back in stock, that's probably suitable for couples.
All in all I'm satisfied. There might be better dry dry bags for the hardcore type, but for <30 bucks with amazon prime and all that, hard to beat.