OK, so it's an oxymoron to have wet dry bags. These bags do the double duty. You've got full tilt dry storage. Get to your next site and dump the gear. Then fill with some wet water and hang it up in the sun and enjoy having a hot shower. Then fill it with your gear again and use the hose to fill or purge the bag when squeezing it into the crevasses of your boat. If you want to lash it on deck for the full day heating session, tabs in all 4-corners facilitate a solid lash down. Now PVC Free!!