"Amphipod® RunLite 10K 2 Bottle Hydration Belt 21 ounce: The Amphipod® RunLite 10K 2 Bottle Hydration Belt 21 ounce is a unisex hydration waist belt that keeps you hydrated hands-free during training runs, long runs, and race day. With two quick-access 10.5 oz Hydraform™ bottles providing 21+ ounces of total capacity, this running belt lets you carry the fluid you need without breaking stride. The 3-in-1 design combines hydration, storage, and bottle carrying in one low-profile system, so you get everything you need without extra gear.The Grypton™ silicone hip-hugging stabilizer keeps the belt locked in place whether you wear it at your hip or waist, eliminating bounce and shift as your pace picks up. Jett-lock™ caps on each bottle make one-handed access easy during your run, while the expandable XL Airflow™ pack accommodates your phone, nutrition, keys, and essentials without adding bulk. The fully adjustable 1.5 inch webbing belt with low-profile buckle fits a range of body sizes and stays comfortable across longer distances. Bottles attach to any 1.5 to 2 inch strap, so you can use them independently or swap them onto other compatible gear if you already own a belt system.Why Our Fit Experts Love It""I took this belt out on a long training run and was impressed by how steady it stayed throughout - the Grypton™ silicone kept it from shifting even as I picked up the pace. The jett-lock™ caps made grabbing a drink quick and easy without slowing down."" - Michael, Road Runner Sports Fit Expert, Seattle WAWho It's Best ForThe Amphipod® RunLite 10K 2 Bottle Hydration Belt 21 ounce is best for runners and fitness athletes who want hands-free hydration and storage during training runs and race-day efforts. It works well if you prefer a stable, low-profile bottle waist pack that carries both fluid and essentials without bouncing or shifting. If you need reliable hydration access and gear organization for distances where carrying a handheld bottle or larger pack doesn't feel right, this belt delivers the capacity and stability you're looking for. VIP Family members can take the RunLite 10K 2 Bottle Hydration Belt 21 ounce for a 90-Day test drive with our Perfect Fit Guarantee."