I’ve used this bag for a cell phone that I frequently remove and put back to take photos while kayaking. While secure, the three rows of click-in-place ziplock I find impossible to align and close. The bag is just as secure when I roll it and use the outer two snaps without the ziplock seals (assuming I don’t submerge it of course). My only complaint is one side seam ripped open after repeated use. Will try for a larger bag and hope for a zipper like seal in the future.