I can tell you Camelbak ones are completely ineffective. I do this when I can be arsed:
Assuming a morning ride, stick one bottle in the freezer the night before. When you wake up, take it out and swap another in for an hour.
This gives you one chilled but not frozen bottle for the first half of the ride, and another, once defrosted, for the second half.
Cheers, freezer/fridge shenanigans it is then!
@jdp started
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I can tell you Camelbak ones are completely ineffective. I do this when I can be arsed:
Assuming a morning ride, stick one bottle in the freezer the night before. When you wake up, take it out and swap another in for an hour.
This gives you one chilled but not frozen bottle for the first half of the ride, and another, once defrosted, for the second half.