12.5 cm. Sunny Side. I'm not certain, but I think I bought these at Akachan Honpo. They've been washed in a coin laundry shoe washing machine. Shape distortion, dirt. There's some pilling inside, and they show signs of use, but I think they can still be worn. I'd like to sell them to someone who understands this. Please also check the details in the photos. I inspect them carefully, but I am a private seller, so there may be oversights. Thank you for your understanding. I will offer a discount to those who purchase multiple items! I can also change to Yamato Transport. I may also change to Yamato Transport at my convenience. Please check my profile before purchasing. I look forward to your purchase!