This belt is AWESOME compared to my prior belt Nathan Elite 1 Plus Pack
No Bounce, light weight, very Snug fit. Very Happy with this purchase.
The ONLY very slight little tiff that prevented a 5 star it rides up very slightly after 30-45 mins or so,
but i think that might be inevitable due to Spandex/dry fit clothes + sweat = a slippery surface. But its really not a big deal compared to the crappy-ness of my prior belt. (bouncing, shifting, moving, not snug, etc etc)
As the other reviewers mentioned, the size runs small.
I wear a 27-28 and the Medium fits perfectly, with +- 2inches of give. So if you're a 26-30 I recommend a medium.