size is accurate and this product is great. I already bought a pair 3 months ago and I was so impressed that I ordered 2 other pairs. I live up north and we are in the snow right now. I would not recommend it for an extended period in the cold (-10 deg C) but I keep them on for an hour of snow blowing and I don't freeze and when I come in my feet are still dry!-) Best running shoes I ever had!
Very lightweight, comfortable. Fits wide, similar to Nike. So far, sheds water well in testing.