The bike base is very minimal, essentially just a piece of plastic with some magnets and a centre pivot point for the bottle to mount onto. Built into the bottle itself is the female part of the mount connector which has a central hole for the centre pivot point to slot into then you can either push the bottle onto the magnets or twist it on when space is limited on your frame. H.M., TWIST bottle system I just got this Hermetic bag, and went camping last weekend where we crossed streams and it was great to have my iPhone safe and dry. This is a must have for beach, mtn biking, boating, camping etc.

It's expensive next to regular cage mounted bags too, though of course you don't have to factor in the separate cost of a cage here, as the mount is included.Ron Vogl Thanks you very much, you guys are a first class act. People are usually fascinated and I will definitely continue to sing your praises. You have a customer for life. Thanks again and best wishes. Works exactly as advertised. Easy to install and the bottle mounts easily and doesn't fall out. Would recommend to everyone. delivery time refers to destination country Netherlands. to see the country-specific delivery time.

The VACUUM handlebar base flex offers an ingeniously simple solution for anyone who wants to keep a secure and reliable eye on their smartphone while riding their bike. Thanks to the combination of magnetic force and vacuum, the device always sits firmly on the handlebar, but can still be easily operated, released and reattached with just one hand. The Twist system that the bottle uses is absolutely great; once you try it’s easy to be tempted to install it on all of your bikes… Sammy Johnson, VACUUM case Best bottle attachment system available. It’s both easy to use during rides and stays attached through tough rides. Highly recommend. availability. In this case we recommend to consider alternative items from the BIKE24 product range. Despite the one small negative, I would very much recommend this bottle to anyone that wants a secure, easy to use and durable water bottle on their bike. Priced at €39.99 it’s not the cheapest but that does include the bike base so in my opinion is very fairly priced.No doubt this material is waterproof as claimed, but since the zip – the biggest entry point for water – isn't waterproof, the bag is basically a sieve. A two minute test with a hose sprinkler had the contents soaking wet, along with the base of the bag.