When traveling I wear sunglasses everyday throughout the day, it's always a pain to figure out what to do with them when you're indoors, at night (especially if you've been out all day and not returning home or to your place to stay), or on the plane/bus or other en route to your next destination.  These are perfect for all scenarios.  They're comfortable, fit pretty well (just slightly wide for me but I have a very skinny face), protect from the UV rays well, and fold up nice and compact to easily fit in your pocket or backpack without getting crushed.  Material seems pretty durable and can't beat the value.  Only reason I gave a 4/5 is because they're not my ideal style, but they work.