Pathfinder Pawns: Base Assortment - Rules of Play says:
Make your heroes and monsters stand at attention with this collection of sturdy Pathfinder Pawns bases. Designed for use with the Pathfinder Roleplaying Game, this set includes 18 plastic bases— 11 Medium bases, 5 Large bases, and 2 Huge bases—and are perfectly sized for battles on Pathfinder Flip-Mats, Map Packs, or other gridded game mats. With the Pathfinder Pawns Base Assortment, flood the battlefield with all the creatures your game demands!