This product uses high-purity 99.999% organic germanium powder! Furthermore, far-infrared powder & negative ion powder are also steadily used! *The germanium powder used has been certified as 100% pure by a Japanese public institution. The Germanium Waist Support Belt is for both men and women! The inner 3D print is specially processed by kneading organic germanium and natural mineral powder (far-infrared and negative ions)! Therefore, your lower back will be warm thanks to the far-infrared effect♪ The moderately elastic and thick polyurethane fabric and 4 elastic sticks gently wrap and firmly support your lower back! It fits perfectly with Velcro fasteners that allow you to tighten and make fine adjustments! You can use it comfortably all year round! It is ideal for housework, long hours of desk work, standing work, driving a car, and other tasks that put a strain on your lower back! The gentle cut line fits your lower back perfectly. Applicable sizes: M/Waist 70-95cm, L/Waist 75-110cm Material: Cotton, polyurethane, synthetic leather, nylon, plastic, germanium, far-infrared natural ore, negative ion natural ore, others Size: M/Total length approx. 92cm, L/Total length 102cm Weight: M/approx. 155g, L/approx. 190g Country of origin: China ■Important Notes *Due to the imported product, some spots, loose stitching, and rough stitching may be included. *This product is a special clearance item from our long-term inventory, so we ask that you order with the condition that it is non-refundable. Please understand that we will not be able to respond to messages or offer exchanges or refunds in the event of a defective product. ☆Instant purchase without comments is OK! Thank you very much!