I've purchased at least 2 or 3 of these bottle cages over the last 10 years or so, as they're that good in my opinion. I don't as a rule carry a standard plastic 'water bottle' designed for bikes on my bike, but usually use this drinks' cage for carrying a 500ml plastic bottle of sparking water on my daily commute or for carrying a partly drunk or empty can of fizzy pop for example in it at times. Being adjustable though, the cage can be adjusted to accommodate various sizes of bottle and to hold them firmly in place. I've even been known to pop a bottle of beer and even a bottle of wine into it on occasions, although the cage can be a little stretched with bottes of that size.