Features: With this large capacity running chest pack, you can carry more while running. Our running storage bag caters to a variety of sports and outdoor activity. Multifunctional running vest pack is a option for sport enthusiasts who require a functional vest to carry their items. Our running backpack is suitable for various occasion, such as daily, travel, outdoor and errands. With seven pockets, this undershirt bag can store your phone, wallet, water, chocolate, tissues and other small accessories, and so on. Specifications: Component: Polyester Fibre Inner Component: Polyester Fibres Size: Small/Medium/Large(Chinese size ,follow the size chart to select please) Size: S Chest:82cm(32.28inch) Length:34cm(13.39inch) Size: M Chest:92cm(36.22inch) Length:36cm(14.17inch) Size: L Chest:100cm(39.37inch) Length:38cm(14.96inch) Package Includes: 1 Pc Running Backpack note: Please allow 1-3cm errors due to manual measurement. Due to the difference betweeen different monitors,the picture may not reflect the actual color of the item.