I'm disappointed.

I am skinny, but probably only slightly skinny as far as cyclists go. BMI is like 21.5, not 17 or something. I ordered the small to account for my skinny arms. It's big. Like way big.

I was able to stitch it up to take up extra room and I got it to fit snug. I think it offers a little support, I haven't ridden with it yet though. My kludge left a big ridge at the top of the brace where I stitched it up. This will eliminate my ability to wear a backpack/hydration pack while wearing it. It'll be used exclusively for shorter days and the fanny pack.

I'm disappointed that a brace marketed as small from a cycling company is so big. It'd be small or medium in Walmart sizes. I kinda want to mess with it more, so probably won't send it back, but I'm not happy with the purchase.