I'm 6'1, 190lb with 33" waist with broader shoulders. I typically buy MEDIUM jackets for a snigger fit, or LARGE to allow for layers within. After reading some reviews on this RBX Comp Jacket, I settled for a LARGE. Although the material is of good quality and is stretchy, the jacket felt very taunt around my body, especially around the shoulders. It was also quite short. I then ordered an XL. The only difference between the L and XL was the bottom of the jacket, where the L was a bit narrower; other than than, the two were pretty much the same. I eventually ended up getting the XXL, which finally fits my frame, although the sleeves are about 1" too long. But other than the small sizing by good two sizes, the jacket is made of good materials and looks good. I can't comment on its performance, as I have not yet used it on a ride. It's still summer, as I'm writing this review.