Perfect size - 18 x 30 Inches, plenty of surface to work multiple loaves.You could make many loaves of bread at one time. Holds bread in shape easily from baguettes to various sizes. Pure Natural Material - Made of natural flax linen, untreated and unbleached.The black spots on the cloth are cotton seeds which will fall off after washing.it gives you and your family the safest baking experience. Professional Proofing Cloth - Flax Cloth has a non-stick effect because it absorbs too much moisture, minimizes stickiness, and makes bread crispy. At the same time, it can also avoid the pollution and moisture loss during the dough fermentation process, and avoid the bread drying. Convenient storage - You can roll up or fold the bread cloth, and then wash it for reuse A wide range of use - It needs to be cleaned and dried before first use. Suitable for baguettes, long breads, single bread balls or wicker baskets, it can be used in bread shape.