This is a set of Han-eri (replacement collar) and Hiro-eri collar core for the Kirakku Nagajuban from Eriyoshi. The replacement sleeves come in a set of two, one for the lined season and one for summer. It has a zipper and can be attached to the Kirakku Nagajuban. The Hiro-eri type uses a bias-cut collar core, which creates a beautiful shape. It has a texture similar to silk, giving it a very luxurious feel. It can be washed at home and is resistant to shrinking, so there's no need to worry about it losing its shape. Material: Han-eri: 100% polyester White Shiose/Ro (for summer) Set of 2 Collar core specifically for Kirakku Nagajuban replacement collars If the collar area becomes distorted due to repeated washing, inserting this collar core will help maintain the beautiful curve of the collar. How to use: 1. Spread out the replacement collar and insert the collar core into the inner part of the collar. 2. Fold the spread-out collar and return it to its original shape. The shape conforms to the replacement collar, making it very easy to use. Material: Polyvinyl chloride (Set of 2) Color: White This collar core is exclusively for "Kirakku." It has a different shape from regular collar cores. Manufacturer: Eriyoshi Co., Ltd. Made in Japan Suggested Retail Price: 660 yen #KirakkuNagajuban #ReplacementCollar #Hiroeri #Ro #Lined #CollarCore