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Nicholas K. (Ann Arbor, US) Good. This thing does the job. Tested on ok-ish city roads at about 15mph with a plastic cup full of milkshake with a loose-fitting cap. Cap stayed on, nothing came out of the straw opening, and I could see the holder had some "suspension" as I went over bumps. Two thumbs up.
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Antoinette Excellent cup holder that works on much more than bikes; my friend was able to attach it to her wheelchair!
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Brian L. (Seattle, US) I've got a 20oz Contigo that I can finally take along for my rides and sip coffee on my way to work!
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Ashlyn M. (Lakewood, US) Excited to use this on the cruiser bike this summer.