I/O Merino Contact Loose Tight
Here's what other sites are saying:
The I/O Bio Merino Men's Contact Loose Tight is your go--to merino wool baselayer. Whether you're using it under the most technical Gore-Tex bibs or the rattiest old pair of construction jeans, this baselayer will regulate moisture and temperature like a champ. And it will never stink as bad as polyester.
- Backcountry.com refers to the men's version