I've used these gloves in temperatures of 20-30 degrees and they protect my hands just enough that I don't have to constantly shake my hands to keep them warm. However, I have found that even on short runs (3 miles) they tend to freeze from soaking up all the sweat. I bet you don't need these shoes if you run 6 miles or if you just sweat a lot. Also note that there was practically no wind during my runs, so I don't know how they will perform in such conditions. However, these are very thin gloves (about a dime thick) so I doubt they are good in more extreme conditions. However they are great for me as I wanted something lightweight that could be easily removed and put in my bag etc and I would buy them again.
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