Amazon.com: Lululemon Fast and Free Run Belt (Black, Size S 。Lululemon Endura Hydra Belt in Black (BLK), size One Size (O/S). This specialized running accessory is designed for long-distance training where hydration and essential storage are key. Hydration Focused: designed to carry a 500 ml soft hydration flask (often included or sold as a compatible set). Features multiple compartments—often up to five—to organize small essentials like a phone, energy gels, keys, and cards. Made from lightweight, sweat-wicking, and quick-drying technical fabrics (like Nulux™ or Ultralu™) with added Lycra® for stretch and shape retention. Engineered for a low-bounce fit with an adjustable waistband and often includes interior silicone grippers to keep the belt secure against your body during high-intensity movement. includes reflective details to improve visibility in low-light This belt is intended to be worn snugly around the waist or hips. To maintain the technical properties of the fabric, it is generally recommended to hand wash or machine wash cold on a gentle cycle and lay flat to dry; avoid using fabric softeners or bleach. New with tags/packaging