We have one of the SealLine Boundary Pack 115L packs that is our main pack for week+ canoe trips on lakes and rivers. Plenty of room, fits perfectly in tripping canoes, comfortable, no leaks, sturdy. Room for 2 sleeping bags, two sleeping pads, clothes for two and a little extra room. For nearly all portages this pack is perfectly comfortable, but if you're planning to portage just about as much as you paddle, go for the SealLine ProPack to get the waist belt. Sits low enough when not overstuffed to still carry a canoe, too. We are getting a second one from Moosejaw as a gift for my dad- he borrows ours for every trip and it's about time he his own.
I bought two of these bags (70L and 115L) to replace two Seattle Sports H2Zero bags I bought a few years ago (which did not hold up well). We used the Boundaries for a canoe trip in the Adirondack Mountains and they were both loaded and heavy. Despite the weight, the shoulder strap system made them easy to carry on portages and although I was worried about the 115L bag blowing a seam with all the crap I had in it - it was well up to the challenge. I am so impressed with the way the bags handled our trip, I plan on buying the 35L bag for short overnights and day trips.
I have used this product for the past several canoe expeditions that I have gone on. It works wonders of keeping everything dry. It is fairly comfortable when caring it on portages. The only thing that I dislike about it, are the straps on top that close it. They have a tendency to fall off. I fixed it by crisscrossing them on the front. That has worked fine. Overall a good pack.
Overall, an awesome pack to use on any paddle trip or when you just need a rugged, large pack in which to transport a whole mess of clothing and gear. The buckles and shoulder harness system are very easy to use and comfortable. The only draw back from the Boundary Packs are their propensity to make a mess of your belongings because you can't very well organize it all with just one massive compartment. Finding that headlamp or Leatherman amongst everything was a bit difficult. But, I found them eventually and what's more, all my clothing and gear stayed dry during our 2 week paddle trip, what more can I ask for?
"Great daypack if you are in the water/weather."
Used the bag on a week-long float trip in Alaska this summer and my gear stayed completely dry even with a run in with a streamside Alder. The 35 is a perfect daypack size and worked well for my hikes. The waist belt could be a little more comfortable, but that is my only gripe.
i just bought the 70L boundary pack in green and i love it. its big enough to hold all my stuff and makes heavy loads seem feather lite due to its upgraded strap system. This portage ready bag is incredably durable and even floats if dropped in water.
Really perfect for keeping stored things dry, but so are many bags of this type. What makes this one stick out are the straps for reasonably comfortable carrying. There is only a small pad to keep the plastic outer material off of your skin on your back, so you can't expect the less sweaty comfort of a real backpack. Once you arrive at the river, you can remove the straps for packing it into tight spaces.