Ordered these shoes based on recommendations read on line as good shoes for the Tough Mudder.  Finished Tough Mudder Wisconsin yesterday and these shoes are awesome.  While most people were slipping running up the muddy hill following Mud Mile, I had much better traction than anyone else.  While many people were ready to throw their shoes away (or donate to a good cause), I sprayed them off with a hose and they look like new.  No problems with 12 inch deep mud sucking the shoes off my feet.  The speed laces work great. The shoes need very little break in--read to tun in out of the box.  Highly recommend these for any mud run or trail running.