- Very warm
- but good air conditioning
- only smells after days of use
- tight fit
Although Smartwool otherwise relies almost exclusively on wool, the US underwear professional also has a clever merino blend shirt in its programme. The Intraknit Thermo Merino (€135) consists of areas knitted with different densities and a low wool content (52%). Although it is one of the firmer and warmest in the comparison, it impresses with its noticeable cooling effect when you're working up a sweat...