What a phenomenal piece of equipment. It's durable. It's versatile. And, most importantly, it just works! I purchased one of these a while back more as a novelty than anything. I figured, "What the heck! Why not give it a go?" and now I can't go back to normal bottle cages. If you use your bicycle as your primary vehicle, this is the attachment for you. The BOA system allows you to attach any small item, be it rigid, compressible, or oblong onto your frame. And it comes off quick and easy to boot. More than anything, I'd describe the system as just plain useful. If you're having any doubts about picking one up, go ahead and take the plunge. You won't regret it.