SELF-HEALING- 5-layer design for maximum durability 1/8" PVC- Thick construction protects work surface MEASUREMENT GRID- For easy trimming and sizing- 11" x 17" SCREENED GUIDES- Contains inch, metric, and angled trimming guides SURFACE PROTECTION- Protects surfaces and keeps blades from becoming dull Dahle Vantage Premium Self-Healing Cutting Mats are extremely durable and provide 1/8" of work surface protection. This 12" x 18" premium cutting mat features 5 layers of PVC construction with screened inch, metric, and angled alignment guides. Vantage Mats can be used on both sides and are ideal for sewing, crafting, rotary cutting, and cropping photos.