How do I properly seal a roll-top SealLine dry bag?

We recommend a minimum of 3 folds (aka “rolls”) to properly seal a roll-top dry bag. For an optimal seal:
 

• Make sure the stiff sealing strips are wrinkle-free. Close the dry bag so that the sealing strips are pressed together
• While holding strips together, push down to “burp” out trapped air. Once trapped air has been “burped” out, tightly fold the top over several times so that the roll-top closure has been folded at least 3 times
• Connect the buckle in the direction opposite to the direction the material was folded, or along the sides when side buckles are present