In reply to Ben Abbott: Always liked mudclaws, used most varieties over the years. Really liked the 300s, slightly larger / wider than the others maybe. However, found that the sides are a bit more rigid and they abraded under my ankle bones when doing lots of contouring (i.e Howgills OMM!) And that was after just one day as day 2 was missed due to a, erm, fuel misplacement scenario!
For most hill running situations, excellent!
The bright yellow wears off pretty quick, so don't let that put you off!