Wore my new Icebreaker GT260 rapid zip thru top yesterday to hike Grays and Torreys peaks. We started the hike at 11,280 feet (I think), at 5 am, frost on the trees, everything. Stopped for breakfast around 6:30, 42 degrees. No one checked the summit temps that I heard, but it was a little windy and fairly cool but the sun felt great.

It was absolutely the best layer I could've chosen. Sleeves were long enough, hem is VERY long (particularly for icebreaker) so it kept from riding up under my pack. Layered it over an icebreaker t-shirt and an i/o bio sports bra (anyone see a trend here?) I started out with a windproof shell at the bottom that I quickly ditched, and pretty much just kept this on until we were close to the cars again and it was 60-something out.

Here's a summit photo that I didn't know was being taken, sporting my new awesome top!

Click image for larger version. 

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