CoreEnergy Belt Navy leather and stretch material belt with a simple, adjustable design. Navy Leather and stretch material Silver buckle Adjustable holes Can be shortened by cutting, but currently, the shortest length is 92 cm. Made of stretchy material. Purchased but never used, stored at home. No box included. Purchased for 11,000 yen (original price) I learned about this belt while watching TV. It was introduced as being very comfortable for the lower back.