If you are a runner, you need Salomon’s S-Lab Sense Ultra part backpack, part vest. Built out of extra-thin, breathable stretch mesh, the lightweight pack allows for maximum hydration during races. It features a couple of pockets that can accommodate 500mL flasks and four compartments – two front and two side – for small items like a phone or a pack of energizing snack. A kangaroo pouch at the back provides enough space for a jacket. Tightly hugging the torso, the bag delivers maximum performance and intuitive storage.