Grounding & Earthing Barefoot Long Boots for Men。Earthing Harmony barefoot grounding shoes for men. These handcrafted shoes embody the essence of barefoot walking, featuring a zero drop, thin flexible sole and wide toe box for free movement, natural grip, and optimal ground feel. Every shoe comes with a copper rivet which acts as a main conductor. These were purchased and worn appropriately 6 times before realizing they are a full size too big and rub the back of my heel. These should fit a US mens 9 foot. The printed size is 41 but like I said they run big. The bottoms look ugly but they truly are in near new condition.