These have been a great sock so far. Compared to prior Teko purchases, these are not dedicated left and right but still fit very well. Just the right amount of elastic and tall enough that you don't have to worry about slippage or blisters from those no show versions. I have used them both as casual socks and running socks and they work well in both situations. For summer, the R/L thinner versions for running are my preference and for winter, the merino wool cannot be beaten. But for everyday and almost every situation, this is a great sock.