Granite Gear AirVent Reduction DryBlocs Stuff Sack - 25 x 10 x 7

I picked one up just before departing on a nearly 3 week backpacking trip in Northern MN to stuff my sleeping bag in. The beauty of this stuff sack is that once you seal it, you can mold it into a perfect brick shape: the ends are stitched in a rectangle shape. This makes total sense for packing it into the bottom of my rectangle shaped pack. NO dead space! It established the shape of my pack while I loaded the rest in. Using these sacks, everything would stack perfectly in a pack.
The clip is solid for how small it is. I actually hung it in a tree a few times as a waterproof bear bag.
The only trouble I had was on the few cold (frost) mornings when I found it difficult to work with the flaps to roll it. They are are extremely thin, put that with cold fingers and it was a small challenge. The rest of the time however I was praising this feature as it was extremely lightweight yet super tough. I felt like I was going to rip it stuffing my bag in-but it's not gonna happen!