Product Specifications:Material: NeopreneSize: 25 x 17 x 4 cmColour: BlackPackage content: 1 x Running vestFeatures:1. SUPER LIGHT - Thanks to the unique patented design and the breathable neoprene material, the running vest is very light.2. SIMPLE OPERATION - No more unnecessary fiddling with the mobile phone behind a clunky plastic sheet. Simply pull out the mobile phone, operate it and plug it in again.3. FIRM SEAT - The unique design of the vest holds the cell phone firmly and securely in the cell phone pocket and prevents it from jumping up and down while walking and guarantees a comfortable fit. Inside the cell phone pocket there is a small pocket with Velcro , perfect for money, ID and cards.4. WITH KEY CLIP - Front door or car keys can be securely attached to the matching clip in the shoulder strap.5. IDEAL FOR RUNNING LIGHTS - Lights for running in the dark can easily be attached to the shoulder straps and back strap of the training vest.