BCV Classic Boleslawiec, Polish Pottery, Hand Painted Ceramic Stoneware Napkin Rings set of 4, 127 (U-099) Product formed manually and decorated manually using the stamp method as well as brush painting Decorations of ceramic products are made using the underglaze method, which prevents them from rubbing-off and damage. Tolerate low temperatures very well, which makes it suitable for storing food in refrigerators and freezers. Product Dimensions: Diameter: 5.0 cm / 2.0 inch