"•;Westcott 12 X 12 Cutting Mat:; •;Self-healing material prolongs the life of the mat; •;;•;Easy-to-read measuring grid for accurate measurements;•;;•;30-, 45- and 60-degree bias lines to make triangle and star shapes;•;;•;Protects your work space and your blade life all while creating fast, straight and easy cuts!;•;;•;Compatible with Westcott cutting blades (scissors, rotary cutters, hobby knives)"