Keeps your water clean and your drink cold twice as long___ 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 cleaning_ Easy 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.