Review on The Master'S Atlas Grid TilesReversible Dry Wet Erase Battle MapRPG Tabletop Grid All Maps - 88 Tiles & 248 Tokens by Robert Schneider

First off, I didn't have any quality control issues that other reviewers have seen. Some of the lines don't match up perfectly from tile to tile but it has never caused an issue.These have nearly replaced my flip map. I really like being able to pre-draw rooms or tunnels (with wet-erase markers) ahead of a session and just plop them down when the characters can see them. It beats covering a pre-drawn map with paper or saying "pretend you can't see this part". On the occasions that I haven't preplanned a location, it is also nice to be able to draw on a tile from the comfort of my chair and hand it to a player, rather than leaned over one of my players while trying to draw on a central map.Erasing wet-erase marks with water works well. I was concerned about water getting into the edges but that hasn't been a problem yet.All in all I am super happy with these. I've even started using them as little wet-erase boards to track monster damage behind the screen.