Run or fly effortlessly with the ultra-light Silva STRIVE FLY vest, weighing just 113g (size. XS: Made of a soft lightweight ripstop nylon and breathable mesh fabric, it features many smart pockets and elastic loops for attaching running poles. On the front, the vest has two pockets for 500ml bottles (sold separately) and smaller pockets for bars, gels and other small items. One of the front pockets is zipped with a key hook. It features two side pockets for easy access, while on the back, there's a longitudinal pocket at the bottom that is accessible from both sides, providing ample storage options for your essentials. The vest is equipped with an emergency whistle and reflective elements.