Use this cloth under or over your hand-knits while blocking to ensure correct measurements. Gingham checks have been woven to 1" squares for use as a two-dimensional ruler. Lay the cloth under or over your hand-knits while blocking. Count the squares horizontally and vertically to ensure correct measurements of your project. Protect knits while steaming by placing the cloth between hand-knits and steamer or iron. Towel is made of 100% cotton. Tested for colourfastness. Care: Hand wash in cold water. Hang dry. Dimensions: 122cm x 122cm (48in × 48in).