[【Lightweight】The IX INOXTO sports backpack only weighs 200 grams and there are pockets on the left and right shoulder straps for storing 500ML TPU bottles. There is a zipper pocket under the right pocket which can store your mobile phone and items so you can listen to music and exercise at the same time! "【Breathable】The 5L hydration vest adjusts to your back while gently protecting your muscles. The backpacks back and shoulder straps feature sweatproof mesh that provides excellent air circulation and breathability to keep your back cool." 【Adjustable】The lightweight running backpack comes with adjustable hip belt and shoulder straps which can be adjusted according to your torso. The hydration vest provides a good balance of moderate weight and volume for both men and women running. 【Storage and Security】 There is an independent water bag compartment on the back as well as two zipper compartments to store your clothes snacks and any other necessities you need while running. Reflective trim ensures safety at night and strap clips keep extra straps secure. 【Questions or Concerns】This hydration backpack can be prepared for family and friends who love outdoor activities. IX INOXTO ensures long-lasting service quality. If you have any questions or issues please feel free to contact us.]