No, the Sea to SUmmit eVent Compressible Dry Sack is a roll top dry sack. It looks like it was meant more for kayaking or backpacking. The REI one and the Granite Gear one has four straps that pull down, as demonstrated in Russ's video. With a dry sack, a uh compressible one, some air still gets trapped very obviously. Just think dry sack vs compression sack, kind of the same but not really. It's all right. I'm just gonna take it and exchange it tomorrow for something more like the REI one.