Review on Seirus Innovation Unisex Heatwave Medium by Michael Kosack

They work well as a liner with my other socks, even when I'm cycling in freezing temperatures. However, after 6-8 socks with washes in between, the seams at the top of the insole begin to unravel. So yes they work as they should but for the price if they start falling apart I wouldn't spend my money on another pair again.