Description: 【Running Vest Backapack】Running vest with 2pcs water bottle, each bottle has a capacity of 500ml, and equipped with a straw, ideal for staying hydrated during your workouts or travels. 【Material and Design】Running vest is made of polyester, lightweight, , and comfortable to wear. 【Multiple Storage Compartment】Designed with 10 front pack pockets, you can store items such as water cup, key, phone, , etc., and bladder or other items can be held in the back. 【Feature】Ergonomic designed vest bag comes with an adjustable chest strap that guarantees the fit, keeping the pack from bouncing while running. with foldable water bottle can be collapsed into a compact size, making them easy to fit in your backpack or pocket. 【Applications】This backpack is not just for running and hiking. but also suitable for outdoor activities, such as cycling, mountaineering, climbing, marathons, etc. Specification: Material: Polyester Size Chart: S: Length 44cm/17.32inch, Bust 78.5cm/30.91inch (chest circumference 78cm-86cm/30.71inch-33.86inch) M: Length 45.5cm/17.91inch, Bust 83.5cm/32.87inch (chest circumference 87cm-92cm/34.25inch-36.22inch) L: Length 47cm/18.50inch, Bust 88.5cm/34.84inch (chest circumference 93cm-99cm/36.61inch-38.98inch) XL: Length 49cm/19.29inch, Bust 93.5cm/36.81inch (chest circumference 100cm-107cm/39.37inch-42.13inch) XXL: Length 51cm/20.08inch, Bust 98.5cm/38.78inch (chest circumference 108cm-120cm/42.52inch-47.24inch) Package Includes: 1 Running Vest 2 Pieces Soft Water Bottles Note: Please allow slightly errors due to manual measurement and different monitors.