Transition Featherweight Zip T

have used for years now. Does not matter which year you find out there in the stores, they have not improved them from year to year from what I can tell. Hard to improve anyway. This is my standard in the Canadian Rockies, summer and winter and good for the desert winter and spring months. The tight fit protects my arms from the harsh rock routes in the summer and with use of a vest keeps my arms warm enough to climb waterfall ice in the winter. The chamois is in all the right places to protect your skin from the tough wind resistant material used. A true lightweight wind shirt. I challenge you to destroy this thing. Mine collection might look rugged, but any other product would have been tossed after that many hours in the backcountry. I always want to buy more, but don't because my closet remains full due to their durability. I replaced Patagonia's Regulator shirt product with this. The big difference is the more athletic fit. They don't get snagged on the approaches, thus tearing holes into them. Lighter weight and just as warm.

I like these for certain kinds of trips, mostly spring / summer / fall alpine stuff. I prefer to wear it next to skin, or else anything underneath it will get soaked with sweat. In winter I prefer just a regular base layer like midweight capilene.

For a sun-baked approach in summer I have found that these can be too hot for me, necessitating a thin light-colored shirt of some kind.

I have to agree with rhyang...I find I sweat too much in the summer wearing this while hiking or climbing. But, in the Spring, Fall, or Winter this is a great shirt. It cuts the wind and protects the skin from rock and brush. I got the tights to go with it. I give it a 4/5.

this shirt is designed for climbers, not hikers. Great for alpine climbing or desert winter climbing.