I would have never guessed that Lululemon would have nice travel pants for men. But my wife and kid bought me a pair of their ABC Classic Pants. They have a lot going for them. Quite lightweight but hang like heavier fabric. They'll be a quick dry sink wash, and won't take up much room or weigh down the pack when I'm in shorts. Very comfortable with a bit of stretch. Good contemporary look without being too extreme. They'll span casual to more dressed up nicely. Front pockets are relatively large, deep and drop straight down (this is a must for me with travel pants - nothing easy to pickpocket or where something can fall out when I'm sitting). One hidden zippered pocket that will fit a passport or two and a back up credit card. Waist sizing in 1 inch increments and length in 1 and two inch increments. This last is great - you can really dial in fit. I fit the 34 and 33 equally well, opted 34 to have a little roomier fit.
Banana Republic Traveler pants have been my go to for a long time, but the Lululemons might edge them out for summer travel. The Lulu's are equally good looking, lighter, pack smaller, dry faster, and are even more comfortable ,and will be easier and faster to hand wash.
I can't speak to durability or stain resistance. They seem good in those aspects, but I'll try to wear mine a lot this winter. Not durable and/or easy staining would be deal breakers.
They make (or at least have made) a slim fit version of the same pants, and a relaxed version.
The ABC Pants are a bit more styled after jeans in seams and fit. They also make a pant called the Commission that's styled after flat front chinos. All the same features/fabric as ABC's with a bit more business/golf course look.
Not cheap! $128 MSRP for most of these pants, but they do go on sale and clearance a lot.
So anyway, I had no idea Lululemon made such travel appropriate and good looking men's wear. I would have never walked into a Lululemon on my own, so I'm glad my girls did it for me. Durability and stain resistance aside for now, I'm a big fan.