Q.I bought the same size as last time, but it's big/small. A.All socks go through a steam ironing process, which is the last process after weaving. Bonne maison is particularly affected by the pressure of the steam and the climate (temperature/humidity) at the time of setting due to the complex patterns woven from various yarns. Due to the nature of the circular knitted fabric, the size may vary slightly for each season/design when opened. It's a product made of the same size, so please don't worry and wear it.