Mountain Hardwear Butterman 1/2 Zip Butterman 1/2 Zip

Fantastic lightweight base layer ... wore it skiing on several sunny days and it kept me just the right temp throughout the day and then in the evening just under a pull over sweater ... great buy!

The absolute most comfortable 1/4 zip I have ever worn. You will know why they named it Butterman after you put it on.

Finest hiking shirt

Another great product from MTH I have two of them and they are some of my go to gear for backpacking