I ordered these because the 180s I have already slide off of my head/ears.  I travel a lot so these are nice as they fold pretty flat - that's a plus but I had hoped that these stream lined version would fit me better.  They ARE more comfortable and lightweight but as they are not adjustable - they still slide a bit.  I suspect these are a men's model - wonder if there is a women's version...

So - I am still looking for winter head wear that doesn't fall off.  for me - the 180s Exolite is only OK.