CamelBak: Keeps your water clean and your drink cold twice as long For hot days on the trail, the Podium® Dirt Series Chill keeps your water cold twice as long as other bottles. The Mud Cap keeps dirt and dust out of your bottle while the secure cage fit means you'll be able to swig and stow your bottle with confidence. Like all CamelBak Podium bottles, it features our high flow, self-sealing cap, easy-to-clean interface and easy-to-squeeze design. And, of course, it's 100% free of BPA, BPS and BPF. Double-Walled Construction: Keeps water cold twice as long Optimized Cage Fit: Engineered to securely fit in a variety of bottle cages Easy-to-Clean Interface: All parts can separate for thorough cleaningEasy Squeeze: Get more fluid with less effort  Mud Cap: Drink water. Don't eat dirt.High Flow, Self-Sealing Cap: Maximizes flow rate while eliminating splatters and spills 100% free of BPA, BPS and BPF: Ride clean, drink clean Positive Lock out: For leak-proof transport TrutasteTM Polypropylene with HydroguardTM: Taste your water and nothing else, time after time.