Excellent for weight conscious backpacke
This is one of 3 dry bags I took on the first leg (about 240 mi) of the AT earlier this year. The others were heavier, and were used for my sleeping bag and for my down booties, pants and pullover. This one was used for my food. It did not have a valve like the others, but since food didn't need the air squeezed out and compacted like the down gear, it functioned well without one - I just hugged the bag, then folded the entry several times, then snapped the closure. It comes with a D ring as well, and when hanging the bag from bear cables or stringing it up to a limb, either the ring or the closed clasp worked well. Although extremely lightweight compared to the other bags, it held up fine and did not leak after over a month of use and abuse. Highly recommended if you don't need a bag with an escape valve to reduce the volume of fluffy gear.