NATHAN Hydration Pack Vest Backpack VaporHow Series (Women's) NS4538 Brand: NATHAN I recently purchased this here. I am selling it because the size didn't fit when I tried it on. In the previous seller's product description, it was stated that the whistle string was missing during inspection, and it was a defective item with only the whistle. However, when the product arrived, I confirmed that the whistle was not included. There are no scratches or stains on the vest. Size: XXS Underbust 66-69cm Chest 76-80cm Thank you.