I don't like the extra weight at all. Proper hydration the night before makes a huge difference. I usually drink water/oj/a beer on the way to the mountain and parking lot, then riding hard and going till lunch is no problem. I get thirsty but its not unbearable and its better than ridiing weighed down.
If you ride with a bunch of shit anyway, then the bottle you showed in the pic works great, I have several of those for my dog's summer hiking pack as well as a couple extra I carry in my own for her on longer hikes.
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