Fabric: diving fabric (new composite fabric).Product structure: main warehouse, left warehouse, right auxiliary warehouse, water bottle warehouse, headphone hole, water-proof zipper.Suitable for people who love sports and running.Size: 21*10*10 cm, can easily accommodate a 6-inch mobile phone.Applicable waist circumference: 67-120cm (2-3.6 feet)feature:High-quality diving fabric, sweat-absorbing and breathable, soft and skin-friendly, waterproof and shock-absorbing, making running more comfortable.Reflective strip design: It is safer to run in the morning and at night. The reflective strip will reflect strongly at night when it encounters light, playing a warning role and escorting you.