Fits true. Exactly what I wanted.

Medium is huge, I have a 77inch reach and the arms go well past my wrists.

love this fleece but needs better stitching

Purchased medium size, it is more like X-large

This is a perfect design. This is what I want, except the small is more like a medium/large. If your base layer doesn't fit tight, then it's no good. Will probably return this.

Just received item so just some observations. I own the R1 and thought some comparisons would help. The material is very similar, almost identical to the R1, my medium in both weighs essentially the same. The waffle pattern of the R1 is a little larger in scale (squares are bigger) but the thickness of the outer layer and feel is the same. The R1 is composed of a lot more panels than this item, so the fit is a lot more contoured and better fitting for an athletic build. The medium fits much more snugly in the R1. So this item fits more like a pullover coat than a mid or baselayer. I am 5'9" and 145lb. Medium is loose but not too baggy for a light outer layer. Thumb holes are only good for holding on to sleeves while adding another layer, in the wrong place to leave thumbs in while wearing. The quality of the stitching and overall assembly is much better on the R1, but remember it is about 4 times the cost. Overall I really like the item for the price and will use it more like an outerlayer than a baselayer. Great value. Will have to see how it works out in practice.

colar does not stay where it should. why is the other color cost 30% more !