I am 5'9", 165 and the medium Stratus vest fits perfect with room to spare, even after layering under it with a hoodie, base layer and long sleeve tee and under shirt. I tried the large and while it would have been fine in a vest, this is a layer that goes under my Stratus jacket and there was just no need for a large. Many of Sitka's items are true to fit so you don't automatically have to go up a size. For me it typically works out like this with Sitka clothing: Standard fit, I wear a medium. Performance fit, I wear a large.

This is by far my "go to" vest. From mid October through mid November, I wear this vest. I either wear it with the fanatic hoodie or under the stratus jacket. I'm completely comfortable to temps down to the mid 20s. I do not go on a hunt without this vest either on me or in my pack.

Excellent fit finish and perfectly thought out like all other Sitka gear. Nice and fin yet the lining combined with the wind stopper material makes this vest amazing. I called a few days ago in regards to the vest and sizing as I would like to be layering it underneath of the fanatic lite jacket and bibs system. I spoke with the most helpful woman. Very personal. Answered all my questions and let me ramble. I believe I had her on the phone for ten minutes! Never once felt rushed and she went above and beyond to make sure I had all the information I needed and then some. Customer service is second to none. I have quite a bit of Sitka gear at his point and it always exceeds my expectations.

Love this vest with my fanatic hoodie! Super warm and super quite, love how it breaks the wind! Range holder pocket is great and provides easy access. I do not go into the field without this vest on me

My most used piece of hunting clothing yet! Love the vest over the equinox for crisp early mornings in early/mid season, especially if there's a steady wind/breeze. When the sun comes up, and the temps rise...off with the equinox jacket, and just wear this over a base layer. Keeps the core temp regulated, and minimizes sleeve bulk for those in pursuit with a stick and string.

Great fit, even being a taller guy it has just enough length. Very functional item!

I really like this piece. Versatile, quiet and windproof. I like vests if they are functional. This one is. It will cover many weather scenarios. Really like it over the Celsius jacket or the Fanatic Hoody. Freedom of movement just seems better in a vest layered over other items to me.

I bought the stratus vest to wear under the Celsius jacket for late season and for the wind protection. Vest fits great and is comfortable. Pretty quiet considering it has wind stopper. It's really thin but surprisingly warm. I like it!

Light weight piece that may be worn daily. Great addition to the Whitetail System.