The camelbak podium chill 610ml water bottle is a great way to keep either warm drinks warm or cold drinks cold with a double wall construction this bottle can keep can keep cold water cold and a warm drink warm for twice as long as a normal bottle there are other features to this bottle which make it stand out from the rest the self sealing jet valve eliminates spills from the mouthpiece and the positive lockout on the top of the bottle ensures for a leaf free ride this bottle is also bpa