I really like that you've now got an on/off switch right at the bite valve. Another nice feature is that the water tube can be detached from the reservoir. Now I can blow air through it using a bicycle pump with a cone attachment to dry out that tube, so water borne microbes don't grow in that tube. The mouth itself is plenty wide enough so I can insert my hand and dry out the inside with paper towels. I only use water in mine but I know that water will stay fresh and clean because I usually fill my reservoir the night before so I can just get up and drive to the charity ride without having to worry about forgetting anything.
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