Excellent Jacket for an active person!!!!
This is a great jacket that is all that it says it is. It is waterproof to extent but would not consider a waterproof shell. Very warm, works great for cold morning workouts. Jacket fits a little small, may need to get a size up. I am 5"7 and thin and need a medium if I wear layers under it. I would recommend this jacket to anyone who wants to battle the elements, cold, rain, wind during a run.

The Gamma MX is a lightweight insulating layer. It is lightly fleece lined. This is an item I would wear under a hard shell; in addition, to base layer(s) of your choice. I am new to Arc'Teryx products and it is hard to believe something so light could be warm. However, this is the new technology. I purchased the Lapis Lazuli color - bright royal blue - gorgeous!

best choice
I for my girlfriend ordered the jackets. This jacket is a gift to her is a good thing. Carrying the colors of her mind, more than any other jacket is like that. In addition, she is wearing jacket with me on outdoor activities such as this would be too good.

Wonderful feminine jacket
In reality, the jacket is much more attractive than photographed. It contours the waist nicely, maintaining a feminine yet sporty style. Aesthetics aside, it is a fabulous all-purpose jacket and layering piece. If you need added warmth or wind protection, simply throw on a light Gore-tex jacket over top. One of the garment's greatest features is the fact that it offers some wind and rain protection as well as just enough insulation to allow you to pursue whatever outdoor activity you're doing without getting overly hot or cold. I think the color, fit, and fabric are absolutely stellar, and would recommend this style and brand to anyone. Note, too, that it is sufficiently long enough for tall women.

great jacket
great material, great fit, just as you would expect from arcteryx