With this set, consisting of three mats, you always have the ideal mat on hand for light, medium, and heavy materials. The cutting mats feature a self-adhesive surface to prevent the material from slipping while you work with your cutting plotter. However, it can be easily removed from the mat afterward. Use this set for cutting nearly all common crafting materials, from paper to heat transfer and vinyl sheets, to thick cardboard. 30.5 cm x 30.5 cm.