This pack of 21 double-sided dry-erase Dungeon Tiles contains five 10" and sixteen 5" tiles, each with a 1" grid. Made out of heavy duty chipboard, they're over 1/8" think.
This set of tiles provides more flexibility than a traditional battlemat by allowing you to assemble your dungeon map like a puzzle as your adventure grows!

Dungeon Master Tips:
Pre-draw detailed maps before the game starts and then connect the Dungeon Tiles as the adventurers go exploring.
Surprise your players by pre-drawing secret doors and traps on the back of the tiles and then flip them over only as they are discovered.

The interlocking feature of these tiles makes the 5" and 10" tiles fully compatible with each other for the best dungeon mapping. Use the large tiles for multiple rooms and great halls. Use the small tiles for the connecting halls and corridors.