Spode Blue Italian Bamboo Napkin Holder Dinner Size Dimensions: 7 1/4" Wide 7 1/4" Long Brand New - First Quality Bamboo is 100% renewable and biodegradable material. This product is not dishwasher safe and should be washed by hand using soapy water. Dry immediately after washing to avoid warping. Bamboo product should be stored at room temperature. Avoid humidity and extreme heat.