GSM Brands Battle Mat with Grid for Role Playing Game - 4 Pack Andvari Battle Boards 17x13 Dry Erase Compatible, Non-Skid Back

EDIT: PRO TIP! Lay two of them upside down next to each other and tape them with just painters tape or something simple. Then you can fold them up to make it portable, and when you unfold it they don’t come apart in the middle. I wouldn’t tape all 4 together but you could do that too.These 4 battle mats are quite nice. I bought a roll up mat in the past that I don't own anymore. Problem with the roll is that it's hard to lay it flat. These sheets are flat and thick - you wouldn't want to bend them or roll them up. That's perfect for playing D&D. It would be easy to tile these to have one big board, some masking tape on the bottom would probably hold them together.For markers, I went with "STAEDTLER Lumograph Non-Permanent Wet Erase Marker Pens" which someone else recommended in another comment. I left a mat out by accident last night, with a map drawn on it in several colors. It all washed right off easily with a little water and a paper towel.A nice feature is that you can prepare multiple encounters in advance using each mat, or combine them into one big map. The roll I had before was about the same total size but was much more of a hassle.Get some of these sheets if you're looking for a reusable grid for your RPG!

These mats are extremely useful! Not only do they lay flat, but moreover, with separate rectangular sections, a dm can mix and match as needed based on the size of the encounter area.I bought 2 sets and have freedom to draw anything my dm'ing heart desires.They clean up easily with dry erase or wet erase.I'm enjoying the fact that they wipe perfectly clean without the need of any damp towels. All you need is a good dry eraser. I bought a cheap set of colored dry erase markers with little end-cap erasers that work splendidly.Highly recommended.

These matts are great! I have tried Chessex and others, but these are by far my favorite because you get so many of them and they are smaller, which makes them more versatile, more portable, and less cumbersome than a single huge map that can take up the entire table and has to be rolled up into a long roll that can be dented, squished or damaged. These smaller matts also allow you to use just one of them whenever that is enough, or place several of them side-by-side whenever you need to continue your map in a certain direction. An additional perk of these matts is that you can use wet OR dry-erase markers (most other matts only work with wet markers). I personally prefer to use dry erase because they don't require water or damp cloths to clean up.

Just used and opened the pack today and once we got the cellophane wrapping off of them, there were only 3 mats. They seem like high quality and durable, but since there were only 3 mats, I have to dock a star.