Used once for trail running. I'm finding it too physically demanding, so I'm selling it. The mouthpiece has been wiped with alcohol. This is a CamelBak Podium Chill water bottle. Thanks to its double-wall construction, it keeps water cold (or warm) for about twice as long as a standard bottle. It allows for easy drinking just by squeezing, provides high flow, and features a self-sealing cap to prevent spills and splashes. The valve can be fully locked with a half-turn to prevent leaks. There's no unpleasant odor typical of bottles, and the valve can be disassembled and cleaned thoroughly for hygiene. - Brand: CAMELBAK - Model Name: Podium Chill - Color: Blue - Bottom Design: Round Thank you for looking.