KAILAS AIR 5L Running Vest Hydration Backpack Hydration Vest Water Backpack Lightweight with Two TPU Water Bladders for Women Men Trail Cycling Hiking KAILAS YELLOW/BLACK M

LIGHTWEIGHT DESIGN: The backpack weight is only 230g(Medium Size), which is mainly suitable for trail running, as well as running, marathon, and light hiking. Equipped with Two 500ml TPU soft kettles, a single weight of 38g, the outward spout can rotate 360°, convenient for drinking water, when the water volume of the bottle is low, the kettle silo can be contracted, and the kettle can be stabilized without shaking, reducing interference to trail runners 3D CUTTING: Using vest-style 3D cutting, the center of gravity of the hydration pack is fixed in a higher position on your torso, the weight balance is transmitted to the entire torso, shoulders and chest weight balance, reducing the pressure on your hips and lower limbs, and the body maintains dynamic balance during running, twists comfortably, and stretches freely ADF SYSTEM: The All-round Dial Fit system is designed to use one-button all-dimensional precise adjustment and fixed-point rail rope guidance, which can adjust the tightne