For those who do use patches (and leave them on rather than only for swimming), do you find they get manky underneath if you're exercising and sweating? If I were swimming then I'd probably be looking for something along the lines of the waterproof ones, but for cycling, I'm not keen on something which claims to be waterproof or even water resistant.
The Not Just a Patch ones which
@Jmaclaren suggests above (thanks) look like they come in two flavours - the originals which are like fabric plasters (though claiming water resistance), and the new ones which appear to be like large patches of micropore tape. I assume they would both dry out eventually, but the former look like they'd stay damp for longer than the latter?
My micropore tape works, but just wondering what other options are out there.