The FuelBelt Helium H2O 2-Bottle Belt is an incredibly lightweight hydration system, constructed to provide you with convenient storage and comfort. Helium Hex-Foam features specially designed air channels that increased breathability and performance in warm temperatures, helping to keep you cool under pressure. The adjustable waistband with soft-touch Velcro closure helps you achieve the perfect fit. Design features bright, energetic colors. Helium Big Grip molded-holsters provide an anatomical fit. Features a large, removable storage pocket. Comes with 2 BPA-free bottles with soft, silicone P2 push-pull caps.