Nathan's new double-walled Fire & Ice Bottle stabilizes liquid temperature in the most brutal conditions. Features: Easy-squeeze, double-walled hydration bottle with reinforced leak-free, soft-sip, Push-Pull cap is dishwasher safe Integrated, never-wear reflective fabric offers 360-degree visibility for optimum visibility at night Comfort-grip allows for fast access and secure on-bike storage BPA-free with taste-free technology Not for use with hot liquids Do not microwave Dishwasher-safe (top rack only)