If you want to carry tools on your bike rather than in your pockets, there are a number of ways to do so. Topeak’s CagePack is a carry case that’s designed to be mounted in a bottle cage and offers a surprisingly large amount of storage –although the trade off is that you lose the ability to carry a bottle (or, rather, two bottles).
When I first received the cage pack it sat to the side for a week or two. I’m quite a traditionalist and err on the side of the less weight the better, and less is definitely more when carrying kit. I usually stash a gel, tube and a tool/puncture repair kit in a jersey pocket, with an elastic band holding it all together and, if the weather’s looking dodgy, a plastic bag for money and cards. Light and effective.
The CagePack is designed to keep your gear tidy and organised. It does this using a selection of elastic straps and strings inside, along with a mesh pocket and elasticated pouches. These are all attached to the shell that uses Topeak’s FoamShell fabric – a compression moulded foam with a polyester material covering that, in use, proved durable and weather resistant, so it’ll keep mud out and is water resistant but not, it should be noted, waterproof.