Very lightweight snow pants.  I use them for hiking, and they are comfortable and dry quickly.  They are not waterproof, but more water resistant.  Water beads off the pants, but too much will get absorbed.  They are also very thick, so when hiking I don't get poked by brush that I'm walking through.  They do have a little bit of insulation in them, but not enough that would make it too hot while hiking on a cool day.