No California Prop65 warning. This green rotating self-healing professional quality rotary mat features a smooth 360º rotation eliminating the need to move your body or your project around. It's simple to use, just cut, rotate mat, and cut again! Non-slip back for stable and safe cutting. Easily make 30º, 45º, 60º and 90º cuts. Especially designed for use with OLFA® rotary cutters. Rotary mats protect your work area and greatly extend the life of your rotary blades.