The Deva is built from polyamide reinforced with carbon and glass fibre which is lightweight and strong.

Testing aside, I wouldn't entertain mounting it beneath the down tube either, since clearance, even with a 600ml bottle, was in hair's breadth territory. Bottle tenure/compatibility The Garmin Tacx® Deva has proven its worth during the cycling classics over cobblestones. Its material and unique cylindrical shape ensure perfect clamping. The Radar isn't a side-entry design in the commonly accepted sense, rather, bottles are inserted and accessed at an angle. Admittedly, this makes entry and retrieval easier than would be the case with a traditional, top-entry design, but the Radar wasn't as compatible with my rough stuff tourer's small main triangle as Lezyne's Flow SL.I've tried the Radar with a range of standard and not-so-standard bottles with excellent results. Out of curiosity, I loaded it with an old school lead acid lighting battery – a great test for a cage's rigidity. Subjected to several miles of unmade roads at 18mph, there were no ejections, and chatter over rough surfaces was minimal. The best water bottle cages (sometimes referred to as bike bottle holders) do exactly what it says on the tin, they hold a water bottle snugly on your bike. Now this might sound like a simple task but it has to hold it tightly enough to prevent accidental jettisoning over rougher surfaces whilst allowing easy access whenever you want to take a drink - not as easy a task as you might think. Optimal clamping - The cylindrical shape of the Deva reduces the chance of the bottle slowly working its way up so you can avoid dangerous situations. The cage has also been designed so that the bottle can be inserted into it easily and smoothly

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The granting of a best price is not combinable with other promotions (e.g. "free articles) from Bike-Discount. The Tacx Deva bottle cage offers exceptional clamping thanks to an innovative cylindrical shape. This design greatly reduces the chances of the bottle vibrating out of the Deva cage and falling – limiting dangerous situations.