1.Specifically designed for Dungeons & Dragons and compatible with other role-playing games. 2.Acrylic rings are crafted to slide over standard RPG miniatures (25-32mm bases). 3.Acrylic rings provide instant visual cues for individual character statuses. 4.Flexible silicone markers are ideal for indicating area effects, environmental conditions, or group statuses. 5.Comes with a compact storage box featuring divided compartments to keep all 120 pieces organized.