Blackburn Chicane Stainless Steel Bottle Cage From  £13.99

I've fitted a pair of these cages to a steel winter build. They are slim, well made and suite the steel frame very well. I've ridden over 300miles with them so far (including a 100 mile jaunt through rough fenland back roads) and they've held my Camelback bottles firmly, but not so firmly that they are difficult to use on the move. Great, understated product that works. Highly recommended.