A1904 Koshitsui and Pelvis Support - Rakuchin Koshi Belt Double by Bone-Sensei [Color] ・Beige [Size] ・L: Upper Belt (Waist) 85-100cm, Lower Belt (Hips) 90-100cm [Material] ・Nylon, Polyester, Others [Weight] ・Approx. 230g [Product Specifications] ・Unisex [Country of Origin] ・Made in Japan *For men, please select based on waist size, and for women, please select based on hip size. If your measurements overlap, we recommend choosing the larger size. Jointly developed by Mr. Mutsuya Sakakibara, known as Bone-Sensei, a chiropractor, and Marumitsu Sangyo, a supporter specialist manufacturer. This product is recommended for those concerned about lower back pain, discomfort, and posture, leveraging Mr. Sakakibara's long-standing experience and achievements from interacting with over 40,000 customers, combined with Marumitsu Sangyo's technology and know-how. The design features a unique two-part W-belt. The upper belt is a "protective belt" that firmly holds the lumbar spine. It supports the lumbar area with a non-stretch fabric, providing firm support to the lumbar spine, and supporting the abdominal and back muscles. The lower belt is an "offensive belt" that balances the pelvis. It tightens, supports, and lifts, providing support for the buttocks, making it easier to walk. The combination of non-stretch and stretch fabrics supports the pelvic area. This balanced design of the upper and lower belts supports both the pelvic and lumbar areas. The use of breathable, thin mesh material is a welcome feature. Designed to be worn over underwear, it is thin and discreet under clothing, with a focus on comfort. ⚠︎ Although unused, please understand that this item has been stored at home. ⚠︎ Please carefully check the appearance in the photos. ⚠︎ As it is inspected by an amateur, there may be oversights. Receipts, proof of purchase, and warranty are not included. ⚠︎ The product will be simply packaged. To reduce shipping costs, the outer packaging may be removed before shipping. Also, the product may be folded or compressed for delivery. ⚠︎ Please check the condition and accessories in the images. Regarding accessories, please be sure to look at the images before purchasing to confirm the current condition. ⚠︎ The color may differ slightly from the actual product due to the influence of the shooting environment. Please understand this in advance. Thank you for viewing.