Save space by vacuum sealing your sleeping bag

I’m getting ready for a 4 day, 3 night kayaking trip down the Devil’s River.  Space is limited on the kayak so I needed a way to maximize the use of space.  While ordering a few items on Amazon I came across these ziplock vacuum seal bags.  As you can see from the photos below, vacuum sealing my sleeping bag will save a considerable amount of space.  I also plan on vacuum sealing a couple of clothing items as well.

I debated buy a hand pump for these bags but I was able to deflate the bag just fine using my lungs.  So, if you are a backpacker or kayaker these bags are worth looking into.  The set I purchased contains 2 XL bats, 5 L bags, 4 M bags, and 4 travel sized bags.  The bag I used for the sleeping bag is a Large bag measuring 21.5″ x 33.5″.  You can purchase the bags from Amazon.com here.