Fiskars Self-Healing Cutting Mats are high quality for sewing, quilting, scrapbooking and more. Fiskars Self-Healing Cutting Mats feature a 1 inch grid marked on it, plus dots every 1/4 inch in each square, 1/8 inch marks along all edges, and 30, 45 and 60 degree bias lines. Easy-To-Read Measuring grid on both sides extends life of the mat. Store flat, away from sunlight, heat or cold. Clean up easily with warm water and mild soap. Made of 100% recyclable polypropylene. 18 x 24 inch.