When the Marmot DriClime Windshirt first came out close to 10 years back, it was revolutionary; truly a testpiece. Now, I give it 2-biners (out of 5-biners) because there have been many similar products developed that I feel are clearly superior.

Mtn Hardwear Featherweight Transition Zip Top. This garment is superior to Marmot DriClime Windshirt in many ways.

.....9 oz instead of 14 oz.....

.....far more abrasion resistant, really no comparison.....

.....bottom hem is stretchy and very fitted so no air-flushing occurs from updrafts of wind.....

.....far more stretchy.....

.....3-layer laminate (Gore Windstopper Next-2-Skin Silkweight) actually stops most wind, whereas Windshirt's Mirage P-210R nylon doesn't do as well.....

.....conforming fitted shape doesn't blouse, which obscures harness gear loops and also occassionally causes mis-racking of biners onto bloused material rather than racking onto gear loops.....

.....brushed polyester lining slides on smoothly, whereas Marmot's DriClime® P-275 lining notoriously snags on each and every hangnail, scab, and rough skin (actually, the Featherweight also snags some, but much less).....

.....3-layer laminate (Gore Windstopper Next-2-Skin Silkweight) protects against steady drizzle whereas the Marmot infamously wets out and soaks thru.....

.....compresses smaller size for packing, i carry my Featherweight Transition in my pant pocket sometimes.....

.....generally it's easier to find a lower sale price on the Featherweight ($95 retail) than the Windshirt ($100 retail).....

.....David Yount.

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Pretty good product. A versitile piece for layering and winter aerobic actiity.
Only beef is the micro fleece/dri-clime material that lines the coat...it does its job but if you have any rough dry skin at all (hands and elbows for me) it is really uncomfrotable to put on....grabs all those little dead skin nubbins like finger nails on a chalkboard..
Ok I am done I need to go powder my nose now.
Ha
:)

I've had this jacket for over a year and a half now. It has many good points- light, packable, windproof, provides decent warmth for brisk days, and pits vent well.

downside- no handpockets at waiste level, only one napolean pocket. not water proof, not even water resistant really.

don't pay too much for this shell, it doesn't do anything great, just a few things decently.

This is the single best piece of clothing I own. It comes with me on every trip. For layering, I'd guess that it adds about the same warmth as an expedition weight top, but with way more versatility. My only gripe is that wind sneaks in at the bottom. A drawcord hem or some elastic would solve that problem.