Nathan VaporAiress Hydration Vest

Yes, it includes a 2L reservoir, so you are ready to head out on your first run immediately.

This system uses adjustable side straps that allow you to customize the fit around your torso. Once you find your ideal tension, the straps lock in place to prevent the vest from shifting or bouncing while you run.

The 4L capacity is best suited for endurance runs where you need to carry essentials like nutrition, a light jacket, and your phone. If you typically carry significant extra gear, you may find this capacity limited, but it is ideal for keeping your load light and streamlined.

The vest is constructed with highly breathable materials designed specifically for warm-weather performance. While any vest adds a layer to your back, the lightweight mesh helps promote airflow to keep you cooler than a standard backpack.

The pockets are designed to accommodate most modern smartphones securely. However, if you have an oversized model with a bulky case, you may want to double-check the dimensions against the front storage compartments before heading out.