About this item High-quality materials: This running vest bag is made of selected high-quality neoprene SBR, which is lightweight and comfortable, the material is waterproof, comfortable to wear and comfortable to wear when running; the reflective running vest weighs 200 grams, which is light and does not increase the burden. Reflective design: The fully reflective printing design is adopted to increase the safety element, which can also be noticed in the dark. The reflective strip reflects light under the illumination of the light, making it safer to travel outdoors at night, ensuring that people or drivers around you can avoid in time to make running safer. Adjustable waist band: The running chest bag has high-quality Velcro and adjustable waist band, suitable for most men or women with bust between 70-160cm; Multifunctional running vest is suitable for most outdoor activities, such as running, training, dog walking, etc. Specifications: The size of the reflective running belt with bottle holder is 57 cm x 31 cm; there is a mobile phone holder on the front of the vest, which can accommodate various types of mobile phones, the size of the mobile phone holder is 18 cm x 10 cm, with a Velcro closure, the mobile phone is firmly fixed on the holder In the bag, it will not bounce up and down. Structure design: There is also a secret pocket inside the front phone holder pocket to store documents or other small items; two extra pockets on the shoulders on both sides for keys or other small items; a water bottle pocket on the back, with a water bottle fixing rope, it can help to fix the water bottle better without affecting safety.