Crocs are light, but they take up a lot of space. However,you can stuff your underwear in them . Mine are mint green. I read somewhere that women over forty should never wear crocs anywhere but by the pool or at the beach--wonder if that applies to men on formal nights? Or you could pretend you're from Texas and just wear boots. Jerry wears his on the plane, on formal and informal nights and sometimes with casual slacks on CCC nights. They cut down the shoe wardrobe considerably. He just brings a pair of deck shoes that he wears with everything else--no crocs though.