This is a amazing dry bag. Extremely light weight and waterproof. If you order the bigger one, it is huge.
I live in Southeast Alaska. We use dry bags for anything and everything outdoors. I use the J3DB with my mainframe and bat wings. The J3DB is excellent quality and large enough to support an extended spike hunt. It zips in and out with ease and is very lightweight. When fully configured with batwings, there is still enough room for a large load of meat between the dry bag and the pack frame (it makes a load compartment). Make sure you order the correct extensions.
J2DB / J3DB Zip-On Dry Bag
I have the smaller dry bag but i wanted more room so i got the large one also. These dry bags are awesome! Btw I'm glad they make it in camo now.