Loke Battlemats are a UK publisher of spiral bound grids for games. I think their products are great and relished the chance to have a chat.
Loke Giant Book of Battle Mats Volume 2 : Toys & Games
Loke's Big & Giant Book Of Battle Mats Get Revised Release – OnTableTop – Home of Beasts of War
Loke BattleMats: Giant Book of Battle Mats
Loke BattleMats: Home
Loke BattleMats: Home
D&D General - Let's Look At Loke Battlemats
Giant Book of Battle Mats Revised by Loke: Loke: 5060703680461: : Books
Giant Book of Battle Mats Revised by Loke Battle Mats
Loke BattleMats Preview Big Book Of BattleMats Volume III! – OnTableTop – Home of Beasts of War