The TrueCut Cutting Mat Combo is an excellent option for those who do a lot of cutting an piecing. The kit includes a 24" x 36" cutting mat and a 24" x 36" non-slip pad. The Non-Slip pad helps enhance both accuracy and safety. Place one underneath any rotary cutting mat to reduce slipping and hold it in place. You can also trim the non-slip pad to better fit your cutting mat. Grace's cutting mats are self-healing and have a center core made of a five-layer PVC plastic, allowing the cuts to self-heal faster and keep the working surface smooth. These double-sided mats include angle reference guidelines, a guide for bias strip cutting, and easy-to-see colors. The TrueCut Cutting Mat Combo makes it possible to get precise, straight lines every time.