Articulated Bite Valve w/Magnetic Slider.
Pivot valve for quick, one-handed on/off action and magnetic clip to keep valve where you need it.
Made from Encapsul material which is a cross modulus blend of "stiff" and "elastic" material for a soft, quiet, clear and rugged reservoir.
Super-clean polyethylene encapsulates a flexible core of TPE.
Contains Nalgene AquaguardTM anti-microbial formula which helps prevent growth of bacteria and mold.
Stays taste and odor free and aids in the cleaning process.