Thank you for viewing. This is the YURENIKUI PRO running belt. It can hold a water bottle, gels, a smartphone, keys, a wallet, etc. It fits waists from approximately 60 to 90 cm. Besides running, it seems useful for walking and outings like travel. I've used it about 3 times, and I think it's in good condition. Retail price: ¥7,980 Color: Black Below is the product description from the website at the time of purchase: ・Bottle pouch that doesn't shake easily while running ・Employs the Sandwich Fit System, which holds the body with the pouch.