In reply to fshbf:
Joining the chorus of praise for Crocs here (well, fake copies anyway).
I've used them as evening footwear for numerous long distance walks having previously lugged a pair of sandals for the evening.
Crocs are virtually the lightest footwear you'll find short of flip flops, they offer some toe protection in wet grass if you're caught short at night, as an added bonus they rinse clean really easily I'd you pick up a intestinal infection and are sick on your feet in the early hours (don't ask me how I know that one!)
They are more bulky to pack than sandals but I find I can squeeze mine inside the bag just under the lid.
Best fiver I've ever spent.