Nancywrote a review of SealLine Boundary Dry Backpack on September 27, 2015
Familiarity: I've used it once or twice and have initial impressions
The 115 L is HUGE. I packed three sleeping bags, clothing for three people, one Thermarest and a Eureka Mountain Pass 3XTE three-person tent (including ground sheet)into this for a four day trip. And my teen boys don't pack light when it comes to clothing. It is so huge that you can't even reach the bottom of it when you are trying to pack it. Not sure I needed one quite that large, but when it's closed and tightened down it still fits crosswise in a canoe.
As for performance, it performs as expected. I gave it four stars instead of five because I don't yet know about durability, although it seems very durable.
I also bought a 70L one, which is a more manageable size. Very good product.