I/O Merino Contact Glory Zip
Here's what other sites are saying:
The I/O Bio Merino Men's Contact 1 Glory Zip Shirt combines merino wool construction with 4-way stretch for total comfort on your next backcountry adventure. If the hike becomes warm and you start to burn out, take off your shell, drop the Glory's hood, and unzip the front vent. AHHHHHH!
- Backcountry.com refers to the men's version