1.Breathable and Adjustable: Enjoy comfortable wear with our trail running backpack, designed to effectively absorb sweat. The flexible, adjustable shoulder straps a fit for your body, enhancing your running experience. 2.Multi-Functional Pockets: Our running hydration vest backpack includes ample pockets and compartments for storing your phone, keys, light jacket, water bottle, and other , keeping everything conveniently organized. 3.Reflective Strips for Night Safety: Equipped with highly visible reflective materials, this water backpack ensures safety during night runs or rides by reflecting any incoming light, keeping you visible and secure. 4. and Stable: Designed to be worn for extended periods, this running hydration pack feels , ensuring freedom of movement. The vest design to your body shape, minimizing bounce for enhanced comfort during activity. 5.Versatile Usage: This reliable, water- water bladder bag daypack is for jogging, running, marathon, hiking, climbing, cycling, backpacking, and more, adapting to various athletic and outdoor activities. Color: As Shown Material: Oxford Package Contents: 1*Outdoor Running Hydration Vest Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.