Light and packs up very small in your pocket . Perfect for cooler rides

Like Colt said, the jacket is too large in the chest and shoulders for the size, causing noise and fluttering. And this is coming from an athletic build with a weight-trained upper body. I would size down, but then would struggle with length and arm hole size. It's a great concept, just too casual above the sternum for performance riding.

Size up if you have broad shoulders

I like how packable and light this layer is. It's great for the days when a heavier jacket will be too warm and you need something to cut the wind over a jersey. The mesh backing does a great job of preventing the layer from becoming too clammy. I rode this on a misty morning in Santa Cruz, and it worked great. I have a 44" chest and athletic shoulders. The XL fits well with room for a vest or thin insulating layer if needed. Although the XL was sized appropriately, it fluttered in the arms/shoulder area while in my riding position. I don't want a cinched fit for an outer layer, but I need to size down to eliminate the flutter. The fabric material and pattern on the shoulder/arm construction would correct this in next year's model. Oh, a yellow or orange color would be great.

Loved the color and the quality. The fit was two sizes too small.

This is a very solid windbreaker, and the color is fantastic. It's packable and does its job. The only (very minor) gripe I have is that it runs pretty big. I'm in XL in all my Specialized kit, but this runs very large and kind of hangs off me. Could be the design, but something to note.