Stay hydrated on the go with the Nike Hydration Belt. It holds 2 squeezable water bottles for quick top ups, with a convenient zip pocket perfect for stashing small essentials. Its built-in expanders flex as you move to help maintain a comfortable fit while strategically-placed silicone minimizes slipping. Benefits:Lightweight materials provide minimal distraction and enhanced airflow. Adjustable buckle offers a comfortable fit. [] Product Details:2 12oz BPA-free, dishwasher-safe bottles. Body:67% polyester/33% nylon. Lining:100% nylon. Bottle:79% low density polyethylene/13% polypropylene/8% thermoplastic elastomer. Spot clean. Imported. Style: N1003444; Color: Black; Size: One Size; Gender: Unisex; Age Group: Adult | Nike 24 oz Flex Stride Double Running Hydration Belt in Black, Size: One Size | N1003444-082