I have skinny legs myself. I bought a pair of Hoss MTB Ponderosa short, they were on sale on their website. They dont have as much material as other MYB Shorts, so they dont flap as much. But they got ripped up when I took a spill on some gravel. So I tried a different brand, Zoic. I ended up buying the black market short. So far so good, but a bit more material than the Hoss. Alos look into Nema and Endura. They also make some great stuff.