called keep on covers:
I think I saw somebody on the road forum reference them but my least favorite part of my speed plays (light action stainless) is the stupid metal cleats and how they get chewed up through normal use AND they're slippery on cement or asphalt.
Anyway, I've used these twice - I forgot I put them on actually - and I"m pretty happy with them. Traction is pretty good and they don't affect my use of the cleat at all. They're made out of a sort of hard plastic and just snap on over the cleat... leave 'em on forever if you want.
Anyway, I'm not affiliated with the company at all, just thought I'd mention it in case it benefits anybody else. I had a set of those speed play cafe covers but of course, I lost them.