Fra Tabletop.enhancegaming.com:

The ENHANCE Grid Mat Campaign Kit is the perfect addition to any map-based RPG for reusable terrain drawing.

The Campaign Kit Includes:

• 1 x Single-Sided 36″ x 24″ Grid Mat with 1″ grid
• 4 x Dry Erase Markers (Red, Green, Blue, Black)
• 1 x Dry Eraser
• 1 x Empty Spray Bottle (50ml)
• 1 x Battle Scroll Sleeve (Travel Pouch)