Brand new with tags running vest / hydration vest Kalenji by Decathlon, size XS/S, adjustable, 10L capacity, water bladder included. This unisex vest has multiple pockets on the back and the front as well as straps for trekking poles. There's a zippered pocket on the back to stash your gear and a waterproof zippered pocket in it for your phone and keys. Reflective details back and front. Different ways to adjust the fitting and very light weight in a breathable material.