Cricut Machine Mat Variety Pack - 30.5 cm x 30.5 cm (4 pack); 4 reusable machine mats 12 in x 12 in (30.5 cm x 30.5 cm); Made with long-lasting adhesive. Durable, won't crack; Use Light Grip Machine Mat for lightweight materials like vinyl, paper & light cardstock; Use Standard Grip Machine Mat for medium-weight materials like iron-on, heavy cardstock & patterned paper.