Comfort. Perhaps the main reason why I like both versions o Nike Free 5.0 Online Shop f the Free 3.0 so much is that they are ridiculously comfortable – they feel akin to wearing slippers on your feet when you run. The upper has very little structure to it – in the original Free 3.0 it’s basically a thin layer of fabric, whereas in the second generation Fre Nike Free 5.0 Dame e 3.0 some cushioning has been added to the ankle cuff (see comparison picture below). As I mentioned above, one of the mai n reasons I bought a second pair of black Free 3.0 v2’s is so that I could use them as a work shoe – it’s awesome to be able to spend a day with these on your feet as opposed to a pair of heavy, stiff leather work shoes.Nike Free 3.0 – 1st generation (top) and 2nd generation (bottom). Note the greater cushioning around the heel cuff in the lower shoe.Weight. The Free 3.0 is a very lightweight shoe, with both models weighing in at under 7oz (in my size 10) Nike Free 5.0 herre . You barely notice when these shoes are on your feet.