I have to walk a lot of miles each day when its extremely hot. The socks make a huge difference regarding how hot I get. I like socks (always ankle high of course) that are very stretched-out, thus making the cotton very thin. This allows my feet to breath because I always walk in old running shoes.
New socks are just horrible!!! Trust me, you do not want to do a 8-km walk in 85" heat in new socks. Running in new socks for a few weeks before walking in them does not really help stretch them out. I'm not sure why. Currently walking (and suffering) is how I break in new socks. But, once I make a pair comfortable, I will always choose to wear them. As a result, I am always wearing the same few pair of socks that are comfortable until they form holes and eventually tear apart... this is not a good system for me.
Basically, how can I take new socks and artificially stretch out the cotton so as to minimize their insulation of my feet? Note: the elasticity of the sock can't be destroyed because I want to be able to quickly slip my shoes off before going inside. I can't have the socks slip off along with the shoes.