Buyosphere — Xray® Deep Ocean Mens Shorts | UnderGear from undergear.com

Xray® Deep Ocean Mens Shorts | UnderGear

There are other colors but I personally like this one. If you recently lost weight, you may want a more fitted style, but the pockets add a lot of functionality too (I always wind up carrying around so much stuff on vacations). There's a similar "light gray" one on that same site, though I personally avoid stainable colors when packing for versatility but you may want to consider it if you are travelling to a warm, southern-hemisphere locale.