Great product with a really wide temperature window. Warm when you need it and good at venting the moisture if you get too sweaty. They aren't cheap but the wool / synthetic wicking layer allows you to wear it in loads of scenarios so it's great for all conditions. Have one without the zip as well and they are my two favorite outdoors layers. Has withstood a year's use and still looks smart.
Fabulous base layer top. Well worth the money. Been wearing these for a few years in the black colour and bought some more in blue. Hope HH keep making this top. Mix of polyestet and merino wool works extremely well. Similar to Icebreaker but cheaper. They wear well and easy to wash. A must have if you spend a lot of time outdoors.