CORELLE / Corelle May Blue series, which was born in the United States around 1970, created the world's first glass tableware resistant to chipping and breakage. With its unique 3-layer structure, it is thinner and lighter than general tableware, and is also more impact-resistant, achieving a break-resistant design. The pale spring blossom pattern makes food look beautiful. I have used it about twice, and the condition is good, but there are two pieces with stains on the back. Thank you for your understanding.