I saw these Halo Twin Rail Courier tyres over on BikeRadar. The colours are bright, but I'm not at all sure about the tread pattern. They look a little like 'cross tyres to me, and apparently they're extra thick for skidding, because that's how couriers stop their "fixies." In that case, they might make a decent alternative to Soma Everwears. And please don't hate on correct spelling.
