JUNE TAILOR-Quilter's Cut'n'Press is two sided. One side has a grid rotary mat with permanent angles and bias lines, other side is a cushioned 1 inch grid pressing surface which enables you to square during pressing-additional grid features provide bias, angle, circle markings and bold center lines. Convenient handle. Overall area measures 14x21, Pressing surface measures 12x18, and cutting surface is 12x18. WARNING: This product can expose you to chemicals including tris(1,3-dichloro-2-propyl) phosphate which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov. Chemical: tris(1,3-dichloro-2-propyl) phosphate