mattcav wrote:i would argue that smartwool or other merino wool would be the best and most durable option over polyester.
I agree with mattcav. The only restriction is the wool washing. It is desirable that the wool is mixed with synthetic fibers that facilitate hot wash. Indeed, bacterias arising from the maceration of sweating are destroyed at 60°C, which is not the case when the wool is washed only at 30. Woolpower is my choice.