The OLFA RM-MG double-sided rotary mat gives a large self-healing surface for full-width cuts, oversized blocks, and multi-step quilting layouts. At 24 in × 36 in (610 × 914 mm), it offers grid markings for measuring and trimming on one side and a plain reverse for general cutting, and the mat is 1 1/2 mm thick. Use it with rotary cutters to protect tables and help extend blade life during frequent cutting sessions.