Edison's Chopsticks II, which teaches the correct way to hold chopsticks, are approximately 18.5cm in size and designed for elementary school entrance to adult women (feeling-wise, for older preschoolers to upper elementary school students). These were used by my child for going out. I was concerned about my second child's poor chopstick grip, so I bought these after they entered elementary school. My eldest son had been using EDISON's Chopsticks I, and he was able to hold chopsticks beautifully when he entered elementary school, so I thought it was better to start using them as early as possible. It took my second child longer to learn, perhaps because they were older, but they can now hold chopsticks properly thanks to these chopsticks, so I'm glad. I also tried 100-yen shop chopsticks, but the EDISON ones are sturdier and don't break. I have two pairs, so please let me know if you want both. I will discount them by 100 yen in total. - Brand: Edison - Model Name: Chopsticks II - Size: Approximately 18.5cm - Ring Inner Diameter: 14 x 14mm - Target: Elementary school entrance to adult women